Here is the full list of all 28 Aplowcalypse achievements.
No hope for mankind
Beat the Story without losing a life
Beat the Story with 4 players
Score 1,000,000 points with 2 or more players
Never kill another player during a 4 player game
Steal 500,000 points from another player
Play a 4 player game
Score 1,000,000 points
Score 500,000 points in a single bank
Survive for 8:15 in Survival Mode
Beat the Story
Get killed by your own fire tire
Play 42 Games (any mode)
Thanks for "playing"
Win by 100,000 points in a 4 player game
Kill 2 players with a single Gravity Mine
Steal from all 3 other players in a single game
Snipe a player with the High Beams from across the map
Hit 3 players with a single Knockback
Score 0 points
Do you wanna kill a snowman?
Play all 3 game modes (Story, Score Attack, Survival)
Listen to the full menu song
Never use plowerups in a single game
Never use your boost during a single game
Never use your secondary during a single game
Discover a worm hole
Look at the credits