Complete the campaign on 'I'm Too Young to Die', 'Hurt Me Plenty', 'Ultra Violence', or 'Nightmare'.

Kill 150 enemies while using Power Ups

Use explosive barrels to kill 100 enemies

Defeat the Cyberdemon

Acquire the BFG

Glory Kill all common enemy types in the campaign.

Purchase the old dock and collect all nuclear waste.

Purchase McKenzie Field Hangar and win the arms race.

Spend a total of $200 million across all three characters.

Solve the mystery of Leonora Johnson.

Complete all Rampages.

Complete all Under the Bridge and Knife Flight challenges.

Purchase Downtown Cab Co. and complete a private fare.