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