Just use the Cog Tag Locations Guide to help you as it will come in handy. During this campaign I’d also go for all the Cog tags rather then doing them on Insane.
For this playthrough I recommend doing it in co-op, and on Casual. The campaign in Gears of War is very straightforward. For these I believe they should start unlocking around the 130+ range. The same problem applies to the weapon achievements such as ' The Nuge' and ' The Money Shot'. That achievement is known for not unlocking at 10,000 kills, as most people have it unlocked at 13,000+. Gears of War is probably best known for its multiplayer, and also known for its infamous ' Seriously.' achievement. Glitchy achievements: All weapon achievements & ' Seriously.' do not unlock exactly after ' X' number of kills.
Does difficulty affect achievements?: Yes Do cheat codes disable achievements?: No Cheats Minimum number of playthroughs needed: 2 Approximate amount of time to 1250 : 400+ hours 150+ hours
