This game feels so classic, it's great.
The combination of slo-mo, wide selection of weapons, and hordes of enemies makes this game feel great to play. The controls feel very intuitive, and the learning curve is pretty simple, despite the length of the game. Which bring me to another point:
This is a short game. All of the chapters can be beaten in a bit over an hour on a first run. However, it does include a couple modes of gameplay, one of which required you to beat the entire game in one run, on one life. I have yet to accomplish this.
There is also a co-op mode, which simply puts two characters through the same levels together. While this definitely feels neat, the screen panning could've been handled better, but it is pretty cool to see what new strategies emerge simply with the addition of another player.
All in all, this was an enjoyable experience, albeit short. if you have the couple bucks to drop, I'd consider giving it a play.