Hmmm...
Twas ok, I suppose. It was a very linear game though, and felt like little more than a point n click shoot-em-up. It was also very easy, and there was no sense of satisfaction upon completion. The unlockable cheats were also a little pointless, as I never ran out of ammo or died either, and I wouldn't play it again anyway. There weren't enough enemies, I often took them all out in my first few steps and then spend thirty seconds walking up an incredibly boring path. Maybe if you had enemies popping out when you weren't expecting, instead of having them all there at the start of the level, maybe that would make it more exciting. I dunno, it was a nice idea, but maybe you should try again and implement some of the things other reviewers and myself have mentioned.