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