Its probably in halo reach when i try to complete the campiagn on legenday diffuculty(Sorry its spelt wrong). I still did not get that achievement. To this day i probably will never go for that achievement ever anymore. I rage to much.

I Forgot What Game

But You Had To Play Over 150 Hours

Almost Broke My Xbox

All stars in Spec Ops on Modern Warfare 2 . Done it twice
But friend kept dying

Seriously from gears 1 seemed to me when I was trying to get that one I was going nuts. That and this is annex also gears 1. I felt like I had 50k kills when I first got seriously and played 5k games of annex.
Old game but no other achievements have been to hard.

Beating Splosion Man on Hardcore mode.

Achievement is literally impossible.

Mine was probably Mile High Club
Annual Halo 3 I beat first try (with loads of fails) but yeah it wasnt hard

I Have Alot More Like
Max Payne 3 Dont Use Any Pain Killers On A Level

Mile High Club on Call of Duty 4: Modern Warfare was a pain. I wasn't a fan of beating Halo: Reach on Legendary by myself either.