I really like the beginning of the game with the narration and the the "after life"...
But everything else seams a bit off. Shooting in the room doesn't feel good, no "bullets", spawning enemy sounds are irritating and have no meaning and I'm not sure how the beginning of the game has anything to do with the rest of the game.
No hard feelings, just my honest take on your game. There is ton of stuff you can do to improve the game, just like everyone else.