Killed 25 enemies with incendiary weapons

Discovered Skag Gully

Completed 5 missions in the Arid Badlands

Defeat ten enemies in a row with a single punch, after softening them up with gunfire

Find the Strange Relic

Find 90 treasures

Find 80 treasures

Find 60 treasures

Finish the game in Crushing Mode

Defeat 70 enemies with the SAS - 12

Defeat 75 enemies in a row without dying

Defeat 50 enemies with the Micro - 9mm