Here is the full list of all 35 Apocalypse: Party's Over achievements.
Finished the game with 2 players
Buy all the Cosplays
Send 500 foes to the grave at once during Junk's Challenge
Send 1000 foes to the grave at once during Junk's Challenge
Finish the game on Fuckin' Manly mode
Finish the game on Fuckin' Manly mode with all the likes
Buy all the Weapons
Finish Otaku stage
Finish Funk stage
Finish Politician stage
Finish the game on Half-boner mode
Finish the game on Half-boner mode with all the likes
Finish the game
Finish Troll Hue Hue
End stage without taking damage
Send 50 Teleshabbies to the grave
Send 50 Sailor Mules to the grave
Send 10 possesed Teleshabbies to the grave
Send 100 enraged Football Fans to the grave
Send 100 False Prophets to the grave
Send 100 Funckers without headphones to listen to that shit to the grave
Send 100 Katias Big Butt to the grave
Send 100 Clowndidates to the grave
Send 100 Money-Grubbings to the grave
Send 100 Terrorists to the grave
Reach level 10
Reach level 20
Reach level 30
Finish a stage breaking every piece of the scene
Finish a stage without using the special
Exterminate 100 pigeons
Send 50 foes to the grave at once during Junk's Challenge
Send 100 foes to the grave at once during Junk's Challenge
Send 200 foes to the grave at once during Junk's Challenge
Finish a stage killing all the pigeons