We Survived
Not unlocked yetComplete Act 1
In the Nick of Time
Not unlocked yetComplete Act 2
Invasion of the Body Snatchers #1
Not unlocked yetGet Perfect grade in said challenge
Invasion of the Body Snatchers #2
Not unlocked yetGet Perfect grade in said challenge
Invasion of the Body Snatchers #3
Not unlocked yetGet Perfect grade in said challenge
Missile-toting Giant
Not unlocked yetGet Perfect grade in said challenge
Utter Chaos
Not unlocked yetGet Perfect grade in said challenge
Attack of the Giants #1
Not unlocked yetGet Perfect grade in said challenge
Attack of the Giants #2
Not unlocked yetGet Perfect grade in said challenge
Attack of the Giants #3
Not unlocked yetGet Perfect grade in said challenge
Attack of the Giants #4
Not unlocked yetGet Perfect grade in said challenge
Golden Slime Rush #1
Not unlocked yetGet Perfect grade in said challenge
Golden Slime Rush #2
Not unlocked yetGet Perfect grade in said challenge
Golden Slime Rush #3
Not unlocked yetGet Perfect grade in said challenge
Jellyfish Battle
Not unlocked yetGet Perfect grade in said challenge
Survive without your Blaster
Not unlocked yetGet Perfect grade in said challenge
Defeat the Shell Family
Not unlocked yetGet Perfect grade in said challenge
Defeat the Slime Family
Not unlocked yetGet Perfect grade in said challenge
Survive the Speedsters' Rampage #1
Not unlocked yetGet Perfect grade in said challenge
Survive the Speedsters' Rampage #2
Not unlocked yetGet Perfect grade in said challenge
Survive the Speedsters' Rampage #3
Not unlocked yetGet Perfect grade in said challenge
Gung Ho
Not unlocked yet
Hardcore
Not unlocked yetBeat wave 24 in Endless Mode
Mission Impossible
Not unlocked yetBeat the Impossible wave either in Challenge Mode or in Story Mode