Nidhogg 2 achievements

Dominate every level in one singleplayer game

Win 100 ranked games through matchmaking

Finish an 8 player tournament

Beat the singleplayer in under 20 minutes

Play a match with old school settings

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

Play a match lasting longer than 20 minutes

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

Beat the singleplayer game

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