Sold 50 guns to a shop

Find 50 treasures

Equipped a class mod for your character

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

Discovered Headstone Mine

Kill 20 enemies with the Desert - 5

Kill five enemies in a row with a single punch, after softening them up with gunfire

Find 25 treasures

Find the Strange Relic

Kill 10 enemies with grenades by aiming while hanging from a ledge

Find five treasures

Finish the game in Hard Mode

Played in a co-op game with either an employee of Gearbox or someone who had this trophy