Basically just interested in peoples' favorite or most prized 360 achievements. I am interested in everyone's response.
The one from Halo 3 where you have to complete the last level in 4 player co-op, with bronze skull on in legendary, wow that took a long time!
Those are good ones. I just got mine today and it's a tie. Mine are the Untouchables and Stomach Upset achievements from Left 4 Dead. Wow they took a long time. I finally figured out the trick for the Untouchables achievement which made it much easier to get than I thought.
Mine would probably be the one for completing the first Gears of War on Insane. I think me and my bro put a lot of effort in to getting though it on Insane, especially the mine carts on act 3! My save game then got erased when playing splitscreen with Nimrod which im kind of gutted about, but I have the achievements anyway.
1: Seriously (played tons of ranked games to get this one day, but never finished the hunt). 2: Fear The Reaper (This is a rather unknown achievement for UT3, requires campaign completion on Insane, extremely hard).
Not your fault, I blame who ever made it impossible to back saves up for games that save to your profile.
I don't think I have a favourite or most prized achievement as most of the ones I have gotten are for completing a game (or moving toward completion). In that sense I'd probably have to say Commando for Gears 1 as it was difficult to do and took quite some time with help from Rustwick