Get a real job.
You seriously don't need to screw your audience in the ass by tacking on content that you can't even get, first off.
As for the actual review:
Graphics: 8
Dark and gory, I enjoy the graphics.
Music: 9
Didn't listen, I'm assuming that it's good enough to pass, though.
Upgrades: 4
Love the fact I can't even get all of them without actually paying.
I do believe that the upgrades could be a little more personalized for the weapon, not just the same generic upgrades for every weapon. Or at least putting in more.
Traps: 2
Once again, love it that I can't have them all. All of them seemed generally useless, EXCEPT the ones I can't get without paying.
Characters: 0
I can't believe you had the balls to bring in the character in and then you can't ever use her again (because honestly, who's gonna pay for any of the content)
Overall: 2
Not many modes, and lots of glitches, such as sometimes not being able to aim without shooting, or getting stuck in the wall.