Here is the full list of all 18 Duck Game achievements.
Spawn 1000 times.
Kill 1000 ducks with any one profile.
Play on 10 different custom maps.
Spawn 100 times.
Get best trophy in all challenges.
Play through a match that goes to 50 points.
Win 10 online matches.
Unlock the arcade basement.
Break 10 draws.
Spend 15 minutes on fire with any one profile.
Crush 50 ducks.
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.