Here is the full list of all 35 We're All Going To Die achievements.
Complete wave 10
Complete wave 25
Complete wave 50
Completed your first wave
Complete wave 69
Complete wave 100
Go one wave with one character not firing a round, using an ability, reviving, or dying
Kill 75 enemies while in continuous motion
Kill 75 enemies without moving
Die for the first time
The entire squad died
Play a skybridge level
Play a desert level
Play a forest level
Play a city level
Play on the hidden level
Destroy Mr. Pinch
Destroy Croaky
Destroy Big Buffo
Destroy the Android Twins, Kit and Kat
Destroy Bubba
Survive a wave in which all your squadmates die
Revive a downed squad member
Use a teleporter
Use a Cryo Grenade that only freezes 1 enemy
Hit 25 enemies with a single AP Round shot
Completed a total of 10 waves in the game
Completed a total of 100 waves in the game
Completed a total of 500 waves in the game
Completed a total of 2000 waves in the game
Completed a total of 5000 waves in the game
Eat an apple
Acquire a speed boost
Destroy a wall on one of the jungle levels
Hit an enemy with the Long Shot Ability from 200 meters away