Here is the full list of all 18 Bierzerkers achievements.
Win a game without the opposing team scoring
Score withing 30 seconds of the match start
Score your first thrown goal
Win your first match
Score your first run goal
Kill 10 enemies in a single match
Get 3 kills without dying and receive Thor's blessing
Finish the tutorial
Equip a weapon in the Armory
Finish a match while in a party
Win 10 matches
Compete in 20 matches
Win a match in overtime
Score in overtime
Rack up a total of 100 kills
Score 100 running goals
Score 100 throwing goals
Win a game at the last moment for your team.