Kill 5 enemies with a headshot during Blacksight

Kill 100 enemies with a headshot

Kill 10 Lycans

Kill an enemy with every weapon

Kill 5 Enemies with Brutal Combo

Kill 40 enemies with science weapons

Kill 50 Enemies with the AK-47

Kill 5 Enemies in a Row with Headshots

Find 1 Treasure

Complete all of Brok and Sindri’s Favors

Perform a melee kill on 10 enemies anywhere in the campaign

Learn the languages of Muspelheim and Niflheim

Kill 3 enemies with a single grenade in Co-op or Versus.