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