Pretty good game, but the slow speed of the reloading was pretty annoying and having a pistol as an "upgrade" wasn't that great. It'd be nice if you were able to cycle through the weapons that you get, or just stay with the most powerful gun that you have gotten.
Pretty fun game. A beotch to figure out some levels. And some of the levels towards the end should've been put closer to the beginning. They're just too easy.