glitched game ????
 

i've completely beaten this game, missions, danger room, every thing but it will not give up the evolution achievement. is this game glitched or what??? should i just give up or is there a trick to this???

There are no glitched achievements in this game, you need to double check everything dude.

I'd have to disagree with you Corrupt, it's just glitched out on me. I've had it on my to do list for a while, finally went back and completed the final wolverine and nightcrawler missions on the hardest difficulty. Filled in the last mutation so all 25 are complete for both guys and no achievement.