Xbox 360 What 360 game has the hardest achievements?

[SteeelWoool]

For me, I think Hexic HD is the hardest. Worst of all, they packaged it free with some Xboxes, just to tease perfectionists like me! Grand Pearl Pooblah requires tons of skill, loads of luck, and about 5 hours of your time.

 

[Claptrap]

Well, one of the hardest for me is the first Dead Rising. Lots of survivor-related achievements and the survivors are complete morons! I once gave a guy a gun to defend himself and he ended up committing suicide shortly after... I'm sure there's way worse out there, though, but I can not think of any right now...

 

[BlackSolaris]

Dead or Alive 5...
Beating survival mode on legendary was just... at least the fighting was really good!

Vanquish jumped from a "too easy" to "why the hell would you do that, this stopped being fair 7 hours ago" when you tried the last challenge.