No way out

why. the hell. is no way out so difficult? I've followed several guides, used several tips, and I still get swarmed and die at 70-80 enemies! I just can't do it, and I've probably tried 30 times by now. it's the only achievement that I don't know I can do 100% and it's really bugging me, is anyone else struggling as much as me or do I just have a massive skill issue? I might give up on the 100% just because of this scenario.