This is a tips, strategy and walkthrough guide to Personal Computer (PC), IBM format video game 'Doom'. There is a gray-scale screen shot for each of the items, weapons, and enemies, as well as many for each mission. There is a floor plan for each of the missions, along with details at what to do at various points in the mission. There are red blood type splotches on the top of most pages, occasionally dabbed to either side of various pages, and on the titles to the chapters. Before the main walkthrough there is general tips on the game and a listing of cheat codes programmed into the game, after the walkthrough tips on 'Network' multiplayer arenas.