Here is the full list of all 18 Duck Game achievements.
Kill 3 ducks at the same time with the Death Ray.
Play on 10 different custom maps.
Play through a match that goes to 50 points.
Unlock the arcade basement.
Win a round in a 4 player match by converting all players to your team.
Finish 50 whole games.
Spawn 1000 times.
Win 10 online matches.
Crush 50 ducks.
Kill 1000 ducks with any one profile.
Spawn 100 times.
Get best trophy in all challenges.
Break 10 draws.
Spend 15 minutes on fire with any one profile.
Win a round while standing on a mine.