Played Resident Evil much?
This is excellent, albeit a short experience, but it's replayability with the achievements is nice. After I beat the game once, I found myself playing the game over and over to get all the achievements. This game reminds me a LOT of Resident Evil, the 4th one to be specific. The ammo being dropped by monsters, the weapon selection, etc, etc..
Still, it is a fun game while it lasts. Nice job.