Goblin Slayer
Kill 100 enemies
Zombie Slayer
Kill 1,000 enemies
Demon Slayer
Kill 10,000 enemies
Aberrant Slayer
Kill 100,000 enemies
God Slayer
Kill 1,000,000 enemies
Under Graduate
Make a discovery at a university
Graduate
Make 10 discoveries with a university
P.H.D.
Make 100 discoveries with a university
Minor Investments
Spend 1,000g funding research
Expanded Learning
Spend 10,000g funding research
Major Investments
Spend 100,000g funding research
Every Tool in the Box
Unlock every tower
Bye bye green guy
Defeat Ooogie in single defense
Ogres aren't forever
Defeat Ooogie in double defense
Even at your worst, you're not your best
Defeat Ooogie in triple defense
Guess who's back?
Defeat spooky Ooogie in single defense
Back to the grave
Defeat spooky Ooogie in double defense
How many times must you die?
Defeat spooky Ooogie in triple defense
Bop boop beep you're dead
Defeat evil Ooogie in single defense
The taller they are, the shorter the circuits
Defeat evil Ooogie in double defense
Alt F4
Defeat evil Ooogie in triple defense
Not so smart
Defeat otherworldly Ooogie in single defense
Just think of the power
Defeat otherworldly Ooogie in double defense
No more mango
Defeat otherworldly Ooogie in triple defense
High Quality Defense
Level up a tower to level 10
This one, I like this one.
Level up a tower to level 20
Super Tower!
Level up a tower to level 50
Only Ballista
Win by building only ballista towers
No More Ballista
win without ever building a ballista
No Stone Unturned
Build one of each tower type in a single game
Sticks and Stones
Win by only building ballistas and mortars
Fortress
Increase tower max health to 30+
Electroshock Therapy
Win by only building ballistas and tesla coils
Winter in Wisconsin
win by only building ballistas and frost keeps
Ashes to ashes
win by only building ballistas and flame throwers
Cough Medicine
win by only building ballistas and poison sprayers
Rip and Tear
win by building only ballistas and shredders
Watch your step!
win by only building ballistas and encampments
Target acquired!
win by building only ballistas and lookouts
Arrows and Aeroplanes
win by only building ballistas and radars
Laser cannon death sentence
win by building only ballistas and obelisks
Sniper Party
win by only building ballistas and particle cannons
I guess I'll just die then
Bastion
Increase tower max health to 40+
Citadel
Increase tower max health to 50+
Slow and Steady...
Increase maximum slow to 90%
Speed Limit
Reduce maximum haste to 0%
I Wander where they are...
Get no occult shrine spawns on a run
Double Trouble
Beat double defense using only ballistas
Indirect Firepower
Beat double defense using only mortars and ballistas
Tesla go bzzt
Beat double defense using only tesla coils and ballistas
Freeze me
Beat double defense using only frost keeps and ballistas
Dust to dust
Beat double defense using only flame throwers and ballistas
Spicy Wind
Beat double defense using only poison sprayers and ballistas
Lumberjacks gone wild
Beat double defense using only shredders and ballistas
Click click boom
Beat double defense using only encampments and ballistas
Painting targets like painting houses
Beat double defense using only lookouts and ballistas
Death from above
Beat double defense using only radars and ballistas
We should put these on sharks
Beat double defense using only obelisks and ballistas
Get deleted
Beat double defense using only particle cannons and ballistas
Shadow of the Ballista
Beat triple defense using only ballistas
Nothing but bits
Beat triple defense using only mortars and ballistas
Maelstrom
Beat triple defense using only tesla coils and ballistas
Ice ice baby
Beat triple defense using only frost keeps and ballistas
Holy Fire
Beat triple defense using only flame throwers and ballistas
Geneva Convention
Beat triple using only poison sprayers and ballistas
Trail of Blood
Beat triple defense using only shredders and ballistas
Safe Passage
Beat triple defense using only encampments and ballistas
Death at first sight
Beat triple defense using only lookouts and ballistas
Air Superiority
Beat triple defense using only radars and ballistas
The glow, the wonderful glow!
Beat triple defense using only obelisks and ballistas
Screw you in particular
Beat triple defense using only particle cannons and ballistas
April Fools!
Are you sure this is a challenge?
Beat Ooogie on single path march of the monsters.
Ok, that was a little spooky.
Beat spooky Ooogie on single path march of the monsters.
Not even hard...
Beat evil Ooogie on single path march of the monsters.
March Madness
Beat single path march of the monsters.
Twice the paths, twice the cards.
Beat Ooogie on double path march of the monsters.
Two paths, double cards: second boss down.
Beat spooky Ooogie on double path march of the monsters.
Twice as Hard
Beat evil Ooogie on double path march of the monsters.
Twice the Victory
Beat double path march of the monsters.
Let the march begin!
Beat Ooogie on triple path march of the monsters.
This challenge doesn't scare me.
Beat spooky Ooogie on triple path march of the monsters.
This march's dogfight is leading to victory.
Beat evil Ooogie on triple path march of the monsters.
Victory March
Beat triple path march of the monsters.
Look mom, no hands!
Beat double defense without ever building a ballista.
I can ride my bike with no handlebars.
Beat triple defense without ever building a ballista.
Never needed them in the first place.
Beat quadruple defense without ever building a ballista.
Welcome to Splitsville!
Beat splitsville on single defense.
Banana Split.
Beat splitsville on double defense.
Triplesplits
Beat splitsville on triple defense.
So...many...paths!
Beat splitsville on quadruple defense.
4 score and many monsters ago
Beat Ooogie on quadruple path march of the monsters.
4 times the spook.
Beat spooky Ooogie on quadruple path march of the monsters.
2 + 2 is 4 paths minus 1 is 3rd boss down.
Beat evil Ooogie on quadruple path march of the monsters.
Give them no quarter.
Beat quadruple path march of the monsters.
Time to Die
Defeat Ooogie in quadruple defense.
Time to Survive
Defeat spooky Ooogie in quadruple defense.
Time to Grind
Defeat evil Ooogie in quadruple defense.
Out of Time
Defeat otherworldly Ooogie in quadruple defense.
Ballista with a Side of Victory
Beat quadruple defense using only ballistas.
Davy Crockett Rockets
Beat quadruple defense using only mortars and ballistas.
Chain Lightning
Beat quadruple defense using only tesla coils and ballistas.
Ice Age
Beat quadruple defense using only frost keeps and ballistas.
Juicebags Full of Napalm
Beat quadruple defense using only flamethrowers and ballistas.
Verowak uses poison spray
Beat quadruple defense using only poison sprayers and ballistas.
Almost Certainly Infinite Damage
Beat quadruple defense using only shredders and ballistas.
Camping is in Tents
Beat quadruple defense using only encampments and ballistas.
Sauron would be proud
Beat quadruple defense using only lookouts and ballistas
Real Civil Airspace
Beat quadruple defense using only radars and ballistas.
Obelisk is All I Need
Beat quadruple defense using only obelisks and ballistas.
BLT Party Cannon
Beat quadruple defense using only particle cannons and ballistas.
Count Chocula
Win by building only vampire lairs and ballistas
The Smell of Gunpowder
Win by building only cannons and ballistas
Sword goes Brr
Win by using only monuments and ballistas
One Bloody Night
Beat double defense using only vampire lairs and ballistas
Balls of Steel
Beat double defense using only cannons and ballistas
Eternal Chivalry
Beat double defense using only monuments and ballistas
Dance Macabre
Beat triple defense using only vampire lairs and ballistas
1812
Beat triple defense using only cannons and ballistas
Oath from Beyond the Grave
Beat triple defense using only monuments and ballistas
Vampire Apocalypse
Beat quadruple defense using only vampire lairs and ballistas
Grand Battery
Beat quadruple defense using only cannons and ballistas
Laid to Rest
Beat quadruple defense using only monuments and ballistas
The End is not Nigh
Defeat grim Ooogie
A Grim Fate
Defeat grim Ooogie on double defense
A Million Missing Hit Points
Defeat grim Ooogie on triple defense
Unstoppable
Defeat grim Ooogie on quadruple defense
Eat your Greens!
Monsters have gained +100% health
Cough Syrup
Monsters have gained +250% health
Penicillin
Monsters have gained +500% health
Brussel Sprouts
Monsters have gained +1,000% health
Chainmail
Monsters have gained +100% armor
Damascus Steel
Monsters have gained +250% armor
Glass Armor Bandits
Monsters have gained +500% armor
Diamond Armor
Monsters have gained +1,000% armor
Ring of Protection +1
Monsters have gained +100% shields
Warding Bond
Monsters have gained +250% shields
Protection from Roguish Damage
Monsters have gained +500% shields
Globe of Protection
Monsters have gained +1,000% shields