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