Needs...
Choices between a checkpoint system 'story-mode' and what it is now, survival..Kind of annoying when you get pretty far and get half way to maxing the weapons..and then die and have to start back at square one. I understand that it's kind of the point of the game, but even games like Last Stand have checkpoint systems.
This really is a good game overall..but the whole 'die after you've played for 30 minutes and restart' thing, doesn't exactly make me want to keep playing.