Already i hear you saying "what?!!! a walkthrough for a shooting game", but trying to locate that last illusive cog tag or being pinned down for the 30th time on the same level on insane mode is enough to rattle the strongest resolution. As per usual the most effective walkthroughs are to be found on Gamefaq, although i've included the best of the rest to add a little piquancy to your search for a solution.
Gamefaq Walkthroughs from... erm Gamefaq
Gears of War Walkthrough from Unlimited Gamer
Walkthrough from OCModShop
Tips from Xbox.com
Gears of War Fansite
Gears of War Official Website
Clickable inkies gears of war walkthrough cheats hints tips faq guides cog tags Gow walkthru xbox 360