I got a day and a half into and I have to say that it is AWESOME!! :)
The graphics are great but some of the controls on the keyboard are kind of weird but that might just be me.
I am already on level 11 of the game and from what I've read I think it only has about 15 levels so it may seem kind of short for some gamers or I am just that damn good and breezed through. :)
In any case I love it. :)
I only tried the multiplayer mode 1 time and didn't care for it as the game did not give any idea of how to control the bad guys when you play as them so I felt kinda foolish as I didn't do much good for the team. I will try the multiplayer mode again when I beat the single player mode.