Completed 5 missions in the Rust Commons

Killed 5 Rakk in under 10 seconds

Sold 50 guns to a shop

Killed 25 enemies by ramming them with any vehicle

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

Discovered Headstone Mine

Discovered Sledge's Safe House

Killed 15 enemies with the Hunter's action skill

Completed 15 missions in co-op

Won a duel against another player

Earned level 5

Completed 5 missions in the Arid Badlands

Craft and place a Sign.