Here is the full list of all 32 The Trivial Dead achievements.
Use a "Lucky Shot" achievement to avoid all misses in a round.
Kill all zombies in one round of shooting.
Answer a question with only one second remaining on the clock.
Answer a question correctly with only one second remaining on the clock.
Take 20 seconds to answer a question and get it right!
Miss 10 zombies, but manage to hit one thanks to Lucky Shot killstreak.
Kill 30 zombies with grenades in one match.
Start a match in Endless mode.
Start a game with Brutal difficulty.
Start a game on Easy difficulty.
Win a game with Brutal difficulty.
Use a Cheat killstreak.
Use a 50/50 killstreak.
Wait for a Hint.
Win a game with History as your best subject.
Win a game with Geography as your best subject.
Win a game with Science & Nature as your best subject.
Win a game with Sports as your best subject.
Win a game with Art & Leisure as your best subject.
Win a game with People as your best subject.
Win a game with Entertainment as your best subject.
Win a game of multiple waves with all team members alive.
Complete a whole game without getting a single question wrong.
Kill a total of 500 Zombies.
Kill a total of 1000 Zombies.
Kill a total of 2500 Zombies.
Get your first killstreak.
Get 20 killstreaks.
Get 50 killstreaks.
Kill 15 zombies with grenades in one match.
Kill 10 zombies in End game.
Kill 20 zombies with a machine gun in one game.