The gameplay is really fun, and I really liked moving around the maps with the jump pads. It's also cool how many different weapon upgrades there are. The cool trick stuff button was a pretty funny touch, too.
Visually, the game looks pretty good, and I like the overall art direction. The particle effects are a nice touch, and I'm a big fan of the music; it fits the gameplay really well.
This was a good entry, I had a lot of fun playing it.
Also, the DK Rap reference is pretty epic.