Nidhogg 2

Comeback Kid

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

Flesh and Blood

Beat the singleplayer game

Domination

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

Hogglike

Dominate every level in one singleplayer game

Slow Played

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

Algorithms

Beat the singleplayer in under 20 minutes

Old School

Play a match with old school settings

GTD

Finish an 8 player tournament

Valkyrie

Win 100 ranked games through matchmaking