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