Welcome to Hell - Extensive overviews and tips on every weapon and item - In-depth single-player maps detailing every item, weapon, and enemy location on your route to Hell - Crucial stats and bios on all characters and enemies - Comprehensive walkthrough for every level - Secrets and cheat codes, including storage cabinet combos - Killer tips and strategies for each multiplayer map - Thorough Marine basic training that will whip you into shape and make you a master fragger - Co-op mode tips