Here is the full list of all 20 Dwarven Brawl Bros achievements.
One last round!
Now that's a party!
Show us the video!
A player killed another player with the hurting weapon.
Reach new heights.
Get killed by gravity.
Why did you do that?
That's a start!
Someday you'll score too!
Finish a match with two players.
Get a kill after dying.
Finish a match with four players.
A player wins without doing anything.
A player got five all-vs-all type game mode wins in a row.
A Player got three all-vs-all type game mode wins in a row.
Finish a match with six players.
Suicide in 1.5 seconds!
Five non-ally kills in a row!
A player has given 1000 damage, taken none.
It works!