You may also wish to view the maps section which has a full breakdown of each map's weapons, armour, ammunition, health, powerups, items
 and enemies along with an overhead view


Walkthrough by Grawl
http://faqs.ign.com//articles/535/535407p1.html

Mike Mangold's Visual Walkthrough
http://www.visualwalkthroughs.com/doom3/doom3.htm

Tim Morrow's Walkthrough
Tim Morrow's Walkthrough

Walkthrough by GreyJackal
GreyJackal's Walkthrough

Walkthrough by Doom3Portal
http://www.doom3portal.com/info/walkthrough.php

Walkthrough by Gamespot
http://www.gamespot.com/features/6104672/p-10.html

Resurrection of Evil Walkthrough by Gamespot
http://www.gamespot.com/features/6122486/index.html

Resurrection of Evil Walkthrough by FecalLord
http://faqs.ign.com/articles/605/605143p1.html

Resurrection of Evil Walkthrough by Planetdoom
http://www.planetdoom.com/roe/walkthrough