Kill 20 enemies by shooting from the hip (without aiming with the L1 button)

Find 25 treasures

Kill 50 enemies in a row without dying

Kill 100 enemies with headshots

Find 10 treasures

Kill 30 enemies with headshots

Kill 10 enemies with headshots

Find five treasures

Defeated the Rakk Hive, the Vault Boss, Sledge, Krom, or Flynt in a co-op game

Single Player: Kill 4 enemies in a row with headshots

Play a single-player game.

Upgrade a Weapon

Acquire the Pepper Grinder