As cute as it is, this isn't really "genre without mechanic." It just doesn't have any mechanics.
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I like the concept, and the descriptions and ideas are really cool. However, in a game that consists entirely of text, I think it's fairly important to have the clearest, cleanest english possible. Maybe ask a writer-friend to proofread next time.
I think the concept is almost there. While you say that you're avoiding your own bullets, that's not really the case. I mean, they come out of you, but you never intend to shoot them. So, effectively, they're just like enemies from any other game.
It would have been really interesting if there was some reason to shoot (maybe you have to shoot certain objects to keep yourself alive, for example) and the player could control when to shoot. If that were the case, then a lot more strategy and risk-taking could be involved, forcing the player to make interesting choices. So, I think your game is a good start.
Now this is what we're talking about. The visual and conceptual execution is excellent, though I feel the player movement was a little difficult to handle. Not very responsive, if you know what I mean.