Well, I'd have to say this game has some solid gameplay. It didn't glitch on me too much, and it was actually pretty fun. The enemies were creative, and they weren't impossible to kill.
The controls were decent enough, although the ASDW set would have worked a little better with the mouse in mind.
As far as graphics go, they were a bit...grainy (at high quality). The environment art was done very well, and the enemies were good enough.
All in all, this game offers some good game play, decent presentation, but somewhat low reply value.