The game is good. However, I'm having some problems with the controls. I don't like the fact that when you hit a wall, you bounce back. This makes it really hard to jump down those sections on the second level.
And the enemies are to "power-full". I really like their AI, but when I go down the elevator in the third level, I start the two guards down there start spraying me with bullets before I manage to shoot them, or hide (even though there's nowhere to hide).
Other than that, this is a great game.