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