How to Play Doom II: Hell on Earth
Doom II is much easier to access. You don’t have to complete the campaign or find any collectibles to play it. Instead, playing Doom II only requires a password. Head the Doomslayer’s room in the Fortress of Doom and interact with his old computer. Select the square on the right side with the floppy icon and question mark. You’ll be prompted to enter a 12 character password. Enter FLYNNTAGGART. Doom II should then boot up and remain unlocked at the computer.