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