Perform 250 Flank, Surprise and/or Tag Team kills

100 targets killed using either an MMG or an MGL

Headshot a target while blind firing

Destroy 50 cars

Fully customize a weapon with 6 customizable parts or more

Complete a mission (excluding New Blood) with a human partner

Kill 3 targets with 1 grenade

Make your first kill as a rookie (in Cause and Effect mission)

Complete the final mission on Human, Devil Hunter or Nephilim difficulty

Help Vergil open the Vault

Acquire Kablooey

Complete a level with 2 minutes or less on the clock

Acquire Revenant