After posting my thoughts on Left 4 Dead 2 yesterday, I felt that I should show you the toughest zombie achievements ever!
(Thanks to http://www.xbox360achievements.org for pictures!)
10. One Is All I need (Dead Island)
Kill Five Infected in a row with a single blow
While the requirements for this achievement weren’t incredibly hard sounding, this achievement had many players struggling simply because it took a lot of luck over skill. By the time you’re actually trying to get this achievement, a single headshot rarely kills a zombie.