If you're sick of crappy Achievements in games (I'm looking at you, Electronic Arts), Team Ninja are giving gamers a chance to create their own Achievements for the forthcoming Ninja Gaiden 2. All you need to do is hit up this link
and post your idea as a comment. The lads over at Team Ninja will then take your Achievement idea into consideration and it could end up in the game.
The deadline for ideas is January 24th, so if you think you're pretty good at coming up with Achievement ideas, jump on the wagon as soon as you can.