Nidhogg 2

100 total kills in one match

Beat the singleplayer game

Win the faceoff and never lose the arrow in a singleplayer match

Dominate every level in one singleplayer game

Beat the singleplayer in under 20 minutes

Win 100 ranked games through matchmaking

Get eaten by the nidhogg after nearly allowing your opponent to do the same

Let the timer run out in your opponent's last screen and win in sudden death

Play a match lasting longer than 20 minutes

Play a match with old school settings

Trap your opponent on your sword for a long time while moving it up and down

Kill yourself with your own arrow

Finish an 8 player tournament