That's a damn good game.The game looks good. The scenes are varied, the difficulty is challenging as one would expect of that kind of game, but beatable.
My completely unreasonable wish list for even more fun:
* Group attacks from enemies (at least from the same kind of enemies?)
* The ending felt a little abrupt. While I understand the intention behind it, how about a boss fight, or a "final wave"? After all, all these experiments must be put to use. ;-)