Challenge Mode

Challenge Mode is a gauntlet of scenarios (12 per region, totaling to 180 once all regions get challenges) in which you make a blueprint that adheres to special rules (varies between challenges) to defeat waves upon waves upon enemies. Successful completion of a challenge will give you a reward which may come as a module or something that would help influence gameplay.

There are 2 modes to challenges: NORMAL MODE, and HARD MODE.

Hard Mode imposes extra restrictions to increase the difficulty on top of the restrictions from Normal Mode, such as:

• All challenges have double the required amount of waves needed for completion.
• All challenges disable Town-related bonuses from various sources (Museum, Arcade, Shipyard, etc.).

UPDATE: Page needs to include Hard Mode Challenges https://github.com/Blueturbo47/bluecats-PerfectTower2-comp./blob/main/Challenges/Hardmode/Pre%20Era/README.md

Note: If the solutions on this page do not work for you, your Laboratory and Museum powerstone Boosts may not be sufficient.

If you have alternate solutions to Challenges that are not here, please use the Discussion page or create another solution box instead of editing an existing solution with your own solution.

Forest Challenges (Region 1):

Level #1

A Symphony Of Water And Fire.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 111		Tank	Max. 7 total Modules have to be maxed T1 or above Modules will be set to maxed T1	None	Phoenix Bounce
Solutions
Pre-era non-hardmode (credits to @V̷̾̕ó̴͗i̸͊̽ḑ̴͋Cannon#4271)
Import Code: Rm9yZXN0IENoYWxsZW5nZSAxO2ZvdW5kYXRpb24uc3RvbmU7cmVnZW5lcmF0aW9uLmJhc2ljO2F0dGFjay5iYXNpYzthdHRhY2suc3BlZWQ7YXR0YWNrLm11bHRpc2hvdDthdHRhY2suYm91bmNl Modules: Offensive Module: Basic Attack Attack Speed Multishot Basic Bouncing Defensive Module: Stone Foundation Basic Regeneration
Pre-era hardmode (credits to @Eternal663)
Import Code: Y2hhbGw7Zm91bmRhdGlvbi5kaWFtb25kO3NoZWxsLmZpcmU7c2hlbGwud2F0ZXI7c2hpZWxkLmJhc2ljO2JhcnJpZXIuZWxlY3RyaWNpdHk7YmFycmllci53YXRlcjtyZXNpc3RhbmNlLmVsZW1lbnRhbA== Modules: Defensive Module: Diamond Foundation Fire Shell Water Shell Basic Shield Electricity Barrier Water Barrier Elemental Resistance Notes: Auto Skip, Wave Streaming and Wave Surge Software from inside the Headquarters are important (although not necessary) to make this much faster and to keep the Shell Modules from reseting

Level #2:

The Dirt Is Alive. Can You Overcome 325 Waves Of Angry, Tanky and Bossy Earth Elementals?

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 325		Tank Boss	Max. 5 total Modules have to be maxed T2 or above Modules will be set to maxed T2	None	+5% Resource Drops per Completed Challenge
Solutions
Pre-era non-hardmode (Credits to @Tortoise Box#9049)
Import Code: Q2hhbGxlbmdlXzI7YXVyYS5oZWFydHN0b3BwZXI7c2hlbGwuZWFydGg7YmFycmllci5uYXR1cmU7Zm91bmRhdGlvbi5kaWFtb25kO3NoaWVsZC5iYXNpYw== Modules: Defensive Module: Heartstopper Aura Earth Shell Nature Barrier Diamond Foundation Basic Shield Notes: Diamond Foundation and Earth Shell (Guarantees survival), Basic Shield, Nature Barrier (One hit KO all enemies), and Heartstopper Aura (If you don't have Nature Barrier and import this blueprint, it will still work because of Heartstopper Aura - it just will take longer). You can switch out Diamond Foundation Granite Foundation (Possibly other ones as well but haven't tested). Adding more software will probably make the run even faster.
Pre-era hardmode (credits to @Eternal663)
Import Code: Y2hhbGw7YXR0YWNrLmNvbWJ1c3Rpb247c2hlbGwuZWFydGg7Zm91bmRhdGlvbi5kaWFtb25kO3NoaWVsZC5iYXNpYztiYXJyaWVyLm5hdHVyZQ== Modules: Offensive Module: Combustion Defensive Module: Diamond Foundation Earth Shell Basic Shield Nature Barrier Notes: Auto Skip, Wave Streaming and Wave Surge are necessary to stack up max ammount of enemies on top of each other for massive dmg from Combustion, otherwise use Heartstoper Aura or Unholy Aura although it will take much longer.

Level #3:

Nature Strikes Back. Make Sure To Hold Back The Incoming Waves Of Archers And Assassins.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 500		Archer Assasin	Max. 5 total No Modules have to be maxed T3 or above Modules will be set to maxed T3	None	Stab Prevention
Solutions
Pre-era non-hardmode (credits to @Coffee#5926)
Import Code: Q2hhbGxlbmdlIDM7YmFycmllci5maXJlO3NoZWxsLm5hdHVyZTtmb3VuZGF0aW9uLmRpYW1vbmQ7c2hpZWxkLmJhc2lj Modules: Defensive Module: Fire Barrier Nature Shell Diamond Foundation Basic Shield Notes: This is just a modified version of @Tortoise Box 's script for challenge 2 but remade against nature enemies. It takes a bit of time but gets the job done. Unlike in challenge 2 the diamond foundation is actually required here unless you've spent a lot of time in the museum and in the fire and nature experiments.
Pre-era hardmode (credits to @Eternal663)
Import Code: YzEtMzthdXJhLmhlYXJ0c3RvcHBlcjtmb3VuZGF0aW9uLmRpYW1vbmQ7Zm91bmRhdGlvbi5ncmFuaXRlO3NoZWxsLm5hdHVyZTthdXJhLnVuaG9seQ== Modules: (Outdated, just leaving here so sometime else can fix it-- Yoshi128986#6141) Defensive Module: Diamond Foundation Nature Shell Flame Barrier Basic Shield Magma Foundation Notes: This is a modified version of @Coffee#5926 solution for normal mode, Magma Foundation was added to multiply Flame Barrier dmg. This will take a while. I recommend using Auto Skip, Wave Streaming and Wave Surge, even having them constantly active your shield points shouldnt drop bellow 30% so dont worry about dying. (Outdated, just leaving here so sometime else can fix it-- Yoshi128986#6141)

Level #4:

Rage Of The Forest. A Combination Of Various Elemental Types Try To Break Your Glass Tower.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 50		Unknown	Max. 5 total No Modules have to be maxed T4 or above Modules will be set to maxed T4	None	Planned Strike
Solutions
Pre-era non-hardmode (credits to @DeserveVictory#3600)
Import Code: Rm9yZXN0IENoYWxsZW5nZSAjNDthdHRhY2suc3BlZWQ7YXR0YWNrLm11bHRpc2hvdDthdHRhY2suYm91bmNlO3NoYXJkcy5pY2U7YXR0YWNrLnNwYXJr Modules: Offensive Module: Attack Speed Multishot Basic Bouncing Ice Shards Sparks Notes: Was trivially easy. I have +145.2% to all 8 elements from my Museum. You may have to disable wave streaming
Pre-era hardmode

Level #5:

Are The Neutrals Evolving?

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 20		Unknown	Max. 6 total Max. 2 Modules have to be maxed T5 or above Modules will be set to maxed T5	Neutral enemies are IMMUNE to anything except universal Universal damage can ONLY damage neutral enemies Tower element type is considered universal instead of neutral	Universal
Solutions
Pre-era non-hardmode (credits to @Traxaner#3385)
Import Code: QzU7YXR0YWNrLnVuaXZlcnNhbDtmb2N1cy51bml2ZXJzYWw7Zm91bmRhdGlvbi5kaWFtb25kO2F1cmEuaGVhcnRzdG9wcGVyO2VuZXJneS5iYXNpYztlbmVyZ3kucmVnZW5lcmF0aW9u Modules: Offensive Module: Universal Attack Universal Focus Defensive Module: Diamond Foundation Heartstopper Aura Utility Module: Energy Energy Regeneration Notes: Used with 250% universal museum powerstone boost Forest Gift or Checkerboard Aura should be strictly better than Energy Regeneration as Universal Focus shouldn't need to be used more than 6 times, and Energy starts off with max energy(40000)
Pre-era hardmode (credits to @Bickerll)
Import Code: aGFyZCBjaGFsbGVuZ2UgNTtlbmVyZ3kuYmFzaWM7ZW5lcmd5LnJlY3ljbGluZztmb3VuZGF0aW9uLmRpYW1vbmQ7YXVyYS5oZWFydHN0b3BwZXI7Zm91bmRhdGlvbi5tYXJibGU7c3BlbGwudm9pZA== Modules: Defensive Module: Diamond Foundation Heartstopper Aura Marble Foundation Utility Module: Energy Energy Recycling Ultimate Module: Void Notes: Wave Endurance and previous software are necessary. Use void after the end of wave 11.

Level #6:

Piercing "Arrows". Only Waves Full Of Archers Are Now Trying To Tear Down Your Tower.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 60		Unknown	Max. 10 total Max. 4 Max. 4 Max. 2 Modules have to be maxed T5 or above Modules will be set to maxed T5	Enemies have only 1% of their original health Enemy damage is multiplied by 10	Forest Gift
Solutions
Pre-era non-hardmode (credits to @MasonTheDuke#8227 and Kotton#2664)
Import Code: Q2hhbGxlbmdlIDY7c2hpZWxkLnVuaXZlcnNhbDthdHRhY2submF0dXJlc3RvdWNoO2F0dGFjay5tdWx0aXNob3Q7YXR0YWNrLnNwZWVkO2F0dGFjay5maXJlO2F1cmEudW5ob2x5O3JlZ2VuZXJhdGlvbi5yZWxhdGl2ZTtmb3VuZGF0aW9uLmRpYW1vbmQ7Zm91bmRhdGlvbi5tYWdtYQ== Modules: Offensive Module: Multishot Nature Attack Fire Attack Attack Speed Defensive Module: Shield of Frost Unholy Aura Frost Aura Daigoparry Ultimate Module: Universal Shield Note: I had about 400% in fire and nature in the museum. You may need more or less depending on other factors.
Pre-era hardmode

Desert Challenges (Region 2):

Level #1:

The Wizards Of Light Blend In With The Scenery.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 250		Wizard	Max. 10 total Max. 2 Modules have to be maxed T1 or above Modules will be set to T1	Modules start at level 0 Utility modules keep their original tier and level Enemies don't drop XP Gems cannot be used to upgrade modules	+1 per completed challenge. (Applied retroactively)
Solutions
Pre-era non-hardmode (credits to BöshiBöshi (@Yoshi128986#6141))
Import Code: RGVzZXJ0IENoYWwgMTtmb3VuZGF0aW9uLmdyYW5pdGU7c2hlbGwubGlnaHQ7Zm91bmRhdGlvbi5kaWFtb25kO3JlZ2VuZXJhdGlvbi5yZWxhdGl2ZTtzcGVsbC5kZXNwZXJhZG87Ym9udXMub2ZmZW5zaXZlO2VuZXJneS5iYXNpYztlbmVyZ3kucmVnZW5lcmF0aW9uO2JvbnVzLmRlZmVuc2l2ZTtlbmVyZ3kuZmxvdw== Modules: Offensive Module: Desperado Defensive Module: Light Shell Granite Foundation Adaptive Regeneration Diamond Foundation Utility Module: Offensive Pack Energy Energy Regeneration Defensive Pack Energy Flow Notes: Upgrade your utility modules to T5 to be less dependent on RNG. Keep spamming desperado through out. It will take a while.
Pre-era hardmode

Level #2:

Sandstorm From The Root.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 175		Unknown	Max. 8 total No Modules have to be maxed T2 or above Modules will be set to maxed T2	None	Energy Flow
Solutions
Pre-era non-hardmode (credits to @V̷̾̕ó̴͗i̸͊̽ḑ̴͋Cannon#4271)
Import Code: RGVzZXJ0IENoYWwgMjthdHRhY2suZGFya25lc3M7YXR0YWNrLmZpcmVicmVhdGg7c291bC5oYXJ2ZXN0aW5nO2F0dGFjay5zcGVlZDthdHRhY2subXVsdGlzaG90O2F0dGFjay5jb21idXN0aW9uO2F0dGFjay5ib3VuY2U7YnVyc3QuZGFya25lc3M= Modules: Offensive Module: Darkness Attack Fire Breath Soul Harvesting Attack Speed Multishot Combustion Basic Bouncing Darkness Burst
Pre-era hardmode

Level #3:

Assassins Don't Like Sand. They Are Not The Only Type Of Enemy You Will Face Between The Dunes ...

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 300		Assassin Boss	Max. 6 Max. 3 No Modules have to be maxed T2 or above Modules will be set to maxed T2	None	Headhunting
Solutions
Pre-era non-hardmode (credits to @V̷̾̕ó̴͗i̸͊̽ḑ̴͋Cannon#4271)
Import Code: RGVzZXJ0IENoYWwgMztzaGVsbC5lbGVjdHJpY2l0eTtmb3VuZGF0aW9uLnN0b25lO2F0dGFjay5tdWx0aXNob3Q7YXR0YWNrLnNwZWVkO2F0dGFjay5ib3VuY2U7YXR0YWNrLmVhcnRo Modules: Offensive Module: Earth Attack Attack Speed Multishot Basic Bouncing Defensive Module: Electricity Shell Stone Foundation
Pre-era hardmode

Level #4:

What Do You Get When You Combine Two Bosses And Three Tanks? That's Right. A Half-buried Camel In The Sand.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 400		Tank and Boss	Max. 6 Modules have to be maxed T3 or above Modules will be set to maxed T3	None	Advanced Heal
Solutions
Pre-era non-hardmode
Import Code: RGVzZXJ0IENoYWxsZW5nZSA0O2dpZnQuZm9yZXN0O2JhcnJpZXIuYWlyO2JhcnJpZXIud2F0ZXI7YmFycmllci5uYXR1cmU7c2hpZWxkLmJhc2ljO2ZvdW5kYXRpb24uZGlhbW9uZA== Modules: Defensive Module: Forest Gift Air Barrier Water Barrier Nature Barrier Basic Shield Diamond Foundation
Pre-era hardmode

Level #5:

A Storm Of Spells And Arrows Is Approaching, Stay Firm And You Will Unlock The Secret Power Of The Desert.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 150		Unknown	Max. 8 Max. 2 Max. 2 Max. 2 Max. 2 Modules have to be maxed T4 or above Modules will be set to maxed T4	None	Sandstorm
Solutions
Pre-era non-hardmode
Import Code: RGVzZXJ0IENoYWxsZW5nZSA1O3NwZWxsLmZpcmVzdG9ybTtzcGVsbC5saWZlbGVlY2g7Zm91bmRhdGlvbi5ncmFuaXRlO3NoZWxsLmFpcjtlbmVyZ3kuYmFzaWM7ZW5lcmd5LnJlZ2VuZXJhdGlvbg== Modules: Offensive Modules: FireStorm Lifeleech Defensive Modules: Granite Foundation Air Shell Utility Modules: Energy Energy Regeneration Notes: This take a really long time(14 minutes in in-game time). All you gotta do is spam Life Leech while waiting for the cooldown of Fire Storm to end.
Pre-era hardmode

Level #6:

Those Cacti Are The Remains Of The Assassins Turned Into Plants By The Wizards ...

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 25		Assassin Wizard	Max. 12 Max. 1 No Modules have to be maxed T5 or above Modules will be set to maxed T5	Enemies have only 0.1% of their original health Enemy damage is multiplied by 100	Desert Gift
Solutions
Pre-era non-hardmode (credits to Moszuke)
Fire bomb spamming with supports like: energy, energy regeneration and universal shield for tankiness. maybe you can use something to reduce cooldown or reset cooldown etc etc.. but this is the minimum to beat it. (super tower not needed) BLUEPRINT import: Y2hhbGxlbmdlO3NwZWxsLmZpcmVib21iO2VuZXJneS5iYXNpYztlbmVyZ3kucmVnZW5lcmF0aW9uO3NoaWVsZC51bml2ZXJzYWw7dG93ZXIuc3VwZXIuMQ==
Pre-era hardmode

Winter Challenges (Region 3):

Level #1:

The Harsh Cold Greatly Enhances The Resistance To Negative Magic Of All The Creatures In This Region.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 500		Unknown	Max. 10 Max. 1 Modules have to be maxed T1 or above Modules will be set to maxed T1	Enemies cannot be slowed below their base movement speed Enemies have 75% debuff resistance Enemies have 75% stun resistance	+3% damage per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #2:

A Blizzard Is An Entertainment By Itself. It Will Really Teach You The Craft Of War.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 400		Unknown	Max. 12 Max. 6 No Modules have to be maxed T2 or above Modules will be set to maxed T2	Tower starts with 400% increased attack cooldown Map is covered in a snowstorm	Snowstorm
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #3:

Mind Your Speed In This Challenge. Ice Giants Don't Like Quick Movements.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 350		Unknown	Max. 8 Modules have to be maxed T3 or above Modules will be set to maxed T3	Tower attacks per second affect enemies base movement speed on spawn Tower attacks per second affect enemies base health regeneration on spawn	+1% resistance per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #4:

Looks Like The Enemies Are Coming Straight Out Of Jötunheim. Is There Anything To Stop Them?

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 225		Unknown	Max. 18 Modules have to be maxed T4 or above Modules will be set to maxed T4	Every unit that spawns increases the tower's attack cooldown by 0.001 seconds Base health and damage of enemies is squared	+1% wave acceleration factor for wave streaming per completed challenge
Solutions
Pre-era non-hardmode
Equip Energy, Energy regeneration, Shock ward, Neutral response, Void Use Shock Ward to stun ennemies and avoid being attacked. Pause the game. Use Neutral response to transform all ennemies into neutral. Use Void to instant kill all neutral ennemies. Unpause the game. Wait for cooldowns. Any global, Water and Darkness resistances are welcome. You can use the Basic Shield + Barriers modules combo to deal with early waves.
Pre-era hardmode

Level #5:

Defeat Olaf!

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 200		Unknown	Max. 10 Modules have to be maxed T5 or above Modules will be set to maxed T5	Olaf!	Mjölnir
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #6:

A Dark Ancient Spell Unites Enemies In This Challenge. Better Keep Them Divided.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 125		Unknown	Max. 8 Modules have to be maxed T5 or above Modules will be set to maxed T5	Enemies gain 1% resistance per enemy on the map (additive) Enemies become invulnerable to almost all damage when 100 enemies are on the map	Winter's Gift
Solutions
Pre-era non-hardmode
Pre-era hardmode

Underground Challenges (Region 4):

Level #1:

A Sequence Of Avalanches And Earthquakes Has Awakened The Deep Earth Tanks. Can You Put Them Back To Sleep?

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 250		Unknown	Max. 7 Max. 3 No Modules have to be maxed T1 or above Modules will be set to maxed T1	Enemies divide damage based on the wave they spawned in	+1% resistance per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #2:

The Tormented Spirits Of Old Miners Will Haunt Your Tower

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 500		Unknown	Max. 10 Max. 2 Max. 2 Modules have to be maxed T2 or above Modules will be set to maxed T2	Darkness enemies deal additionally 10% of the tower's current shield and current health on every attack	+3% damage per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #3:

It Looks Like Those Cave Dwellers Consumed Some Strange Ores Which Hardened Them.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 125		Unknown	Max. 10 No No Modules have to be maxed T3 or above Modules will be set to T3	Enemies ONLY take 100% damage from their own element type Enemies are IMMUNE to any other element type damage except for their own	Aftershock
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #4:

We Have Found A Deep, Hot Ravine.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 100		Unknown	Max. 10 No Modules have to be maxed T4 or above Modules will be set to maxed T4	Destroying fire enemies damages the tower for 33% of its current health as fire damage (ignores shield) Destroying light enemies damages the tower for 33% of its current shield as light damage Destroying earth enemies reduces the current energy of the tower by 33%	Tremors
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #5:

We've Breached The Wall Of A Chamber Filled With Toxic Organic Life.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 125		Unknown	Max. 15 Max. 4 No Modules have to be maxed T5 or above Modules will be set to maxed T5	Enemies apply poison when attacking Poison reduces nature resistance and deals damage based on max. hp Higher stacks of poison are more potent	Poison Sting
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #6:

The Archers And Wizards Of The Deep Dark Found An Ancient Technique To Cloak Themselves.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 75		Unknown	Max. 8 Max. 3 Max. 3 Modules have to be maxed T5 or above Modules will be set to maxed T5	Enemies are invisible and untargetable Enemies become visible and targetable for 0.25 sec. after attacking	Underground gift
Solutions
Pre-era non-hardmode
Pre-era hardmode

Volcano Challenges (Region 5):

Level #1:

The Shells Of These Magma Entities Seem Impervious. Can You Survive Them Or Find Other Means To Defeat Them Until They Cool Off?

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 50		Unknown	Max. 10 Max. 1 Max. 1 Modules have to be maxed T1 or above Modules will be set to maxed T1	Enemies spawn with 1e100 generic armor Enemies start with negative health regeneration Enemies deal 1000 times more damage than normaly	+1% resistance per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #2:

We Have Reached The Molten Core. It Seems Like We Require Water To Proceed.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 125		Unknown	Max. 12 Max. 5 Max. 2 Modules have to be maxed T2 or above Modules will be set to maxed T2	Enemies can only be damaged by using water or any module that ignores their element Enemies ignore elemental damage amplification/reduction from the element grid when attacking	Molten Core
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #3:

We Cannot Take Our Upgraded Modules Into These Lower Sections Of The Volcano.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 300		Unknown	Max. 12 Max. 4 Modules have to be maxed T3 or above Modules will be set to T3	You cannot use gems to upgrade modules Enemies spawn with 1e100 universal, fire, nature, darkness and universal armor Enemies have 75% debuff resistance	+3% damage per completed challenge
Solutions
Pre-era non-hardmode (credits to RookieError)
Standard type boosted attacks, atk speed modules, and resistance work well. Upgrade path attack speed like multishot and bounce first. Damage as necessary. Basic shield upgrades when low on shield. XP boost from Dyson Sphere makes this a cake walk. Leveling modules from 0 means don't skip waves as you won't get the XP for upgrades. Air Attack, Nature Attack, Water Attack, Attack Speed, Basic Bouncing, Multishot, Critical Strike, Rapidfire, Diamond Foundation, Steel foundation, basic Shield, Simple Evasion BLUEPRINT import: ZmlyZSBjaGFsbGVuZ2UgMzthdHRhY2suYWlyO2F0dGFjay5uYXR1cmU7YXR0YWNrLndhdGVyO2F0dGFjay5zcGVlZDthdHRhY2suYm91bmNlO2F0dGFjay5tdWx0aXNob3Q7Y3JpdC5iYXNpYzthdHRhY2sucmFwaWRmaXJlO2ZvdW5kYXRpb24uZGlhbW9uZDtmb3VuZGF0aW9uLnN0ZWVsO3NoaWVsZC5iYXNpYztldmFzaW9uLmJhc2lj
Pre-era hardmode

Level #4:

The Enemies In This Section Have Developed A Really Strong Shield.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 200		Unknown	Max. 20 Max. 6 Max. 5 Modules have to be maxed T4 or above Modules will be set to maxed T4	Enemies spawn with shield points Shield amount is equal to max. hitpoint raised to the power of 3 Boss units can spawn randomly like regular unit types	Heatwave
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #5:

The Volcano Is About To Erupt! Seems Like The Ashes Falling From The Sky Protect The Inhabitants Of This Area.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 300		Unknown	Max. 15 Max. 5 Max. 3 Modules have to be maxed T5 or above Modules will be set to maxed T5	Enemies are immune to a random element (immunity shows up as resistance when selecting a unit)	Rain of Ashes
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #6:

The Pool Of Lava Is Filling Up. Make Sure Not To Overheat Your Tower.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 400		Unknown	Max. 30 No Modules have to be maxed T5 or above Modules will be set to maxed T5	Everytime a unit spawns or dies the tower loses 25% of its current health, shield and energy Health and shield loss is not considered incoming damage For each module you bring into this challenge the loss amount increases by 2%	Volcano gift
Solutions
Pre-era non-hardmode
Pre-era hardmode

High Mountain Challenges (Region 6):

Level #1:

The High Air Density In This Area Creates A Significant Amount Of Pressure.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 250		Unknown	Max. 10 Modules have to be maxed T1 or above Modules will be set to maxed T1	Enemies reflect 100% of non-air damage	+1% resistance per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #2:

Seems Like The Archers In This Area Have Incredibly Sharp Senses.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 300		Unknown	Max. 8 No Modules have to be maxed T2 or above Modules will be set to maxed T2	Enemies will have +100% attack range Enemies are immune to fire and darkness damage (immunity shows up as resistance)	Storm Aura
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #3:

Their Golems Seem To Be Indestructible Although Short-Lived.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 125		Unknown	Max. 12 No Modules have to be maxed T3 or above Modules will be set to maxed T3	Air enemies have 1000% movement speed Air enemies are immune to stuns Earth enemies are immune to all types of damage (immunity shows up as resistance) Earth enemies have negative health regeneration	+3% damage per completed challenge
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #4:

Silent As The Wind. Don't Underestimate Them Just Because They Are Slow!

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 100		Unknown	Max. 10 No No Modules have to be maxed T4 or above Modules will be set to maxed T4	Enemy health is multiplied by 100 Enemy damage is multiplied by 10 DTr (1e100) Enemies move very slowly Enemies are immune to darkness damage (immunity shows up as resistance)	Aero Core
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #5:

Alert The Local Fauna.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 150		Unknown	Max. 12 Max. 8 Max. 8 Max. 8 Modules have to be maxed T5 or above Modules will be set to T5 Modules start at level 0	Goats will occasionally roam across the map Goats deal 20% of of the tower's max hp as air damage upon contact	Stampede
Solutions
Pre-era non-hardmode
Pre-era hardmode

Level #6:

The Low Air Pressure At This Altitude Severely Affects The Target Capabilities Of All Our Devices.

Goal	Elements	Enemy Types	Module Rules	Special Rules	Reward
Wave 175		Unknown	Max. 15 Max. 6 Max. 6 No Modules have to be maxed T5 or above Modules will be set to maxed T5	Area of effect of active, passive and aura modules is reduced by 90% Base attack range of the tower is 3m instead of 18m	High Mountain Gift
Solutions
Pre-era non-hardmode
Pre-era hardmode