* Who is the last boss in the game?
* Who is the third boss you fight?
* Who is the second boss you fight?
* Who is the first boss you fight?
* What enemy monster is most like a walking skeleton?
* What demon appears in almost every level in the game?
* How many types of monsters are in the game?
* What can the Archvile monster do that other monsters can't do?
* What Zombie monster has the most amount of health points?
* Who was the evil scientist who planned to unleash the demons of Hell into the world?
* According to a secret document stored on a Mars computer terminal, what type of blood is best to use when opening sacrificial portals?
* What do you get if you get the high score in the "Super Turbo Turkey Puncher 3" minigame?
* What do the researches call the skeletal, rocket launcher-wielding demons?
* What is the name of the only weapon you do not obtain while on Mars?
* What was the code to both Martian Buddy prize cabinets?
* In which section of the Mars facility did the teleportation studies take place?
* What are the projectiles that the Imps and Hellknights hurl at you composed of?
* Who was the Director of Operations of the Union Aerospace Corporation's Mars project?
* When in the "Doom" timeline does this game take place?