Full list of all 33 Among Us achievements. It takes around 12-15 hours to unlock all of the achievements in the base game on Windows.
The base game contains 24 achievements, and there is 1 DLC pack containing 9 achievements.
Complete 500 total tasks
Win 3 games on Polus
Win 3 games on The Airship
Get killed during a medbay scan
Get 150 total kills
Win a game by killing all crewmates as Impostor.
Win a game by vote as Impostor
Complete 100 total tasks
Win a 2 Impostor game with both Impostors alive at the end of the game.
Win a game by sabotaging a critical system as Impostor.
Get 5 total kills
Fix a sabotage that you called
Get 3 kills before a meeting is called
Get 50 total kills
Win 3 games on MIRA
Win a game without using vents as Impostor.
Get a kill during a lights sabotage
Get your first kill
Win a game by completing all tasks as a crewmate
Complete 10 total tasks
Complete the card swipe task on your first try
Win 3 games on Skeld
Survive and win a game as a crewmate
Win a game as crew with your only votes being for the Impostor
Survive a Game as Crew in Hide n Seek Mode
Kill all hiders as impostor in Hide n Seek Mode
Do all your tasks in Hide n Seek Mode
Kill Someone while disguised as them
Block a kill as a guardian angel
10 wins as a hider in Hide n Seek Mode
50 wins as a hider in Hide n Seek Mode
100 kills as a seeker in Hide n Seek Mode
200 kills as a seeker in Hide n Seek Mode