Pretty good!
I'm looking forward to the next part of this! The game starts pretty quickly, which is good, the dialogue lets the player hop into the game without receiving any prior instructions, the movements are smooth and fast enough, the levels are pretty strategic though not too hard, I only died once, and it's great that you start over on each level instead of at the beginning of the game. I was a bit dissapointed in the lack of music (except in the transitions, which fit in really well), but the silence does add some suspense to it. Graphics aren't the best, could be a bit more detailed, but lack of detail isn't disturbing either. Bloodsplatter, shots and other effects look good even though they're simple. How many parts do you have planned for this? Keep it going!
-cd-