So far, it kinda just looks like a 2D halo 4, which makes me already like raze 2 better. most of the guns and abilities looked like halo, including a twin-barreled rocket launcher, a railgun, a plasma launcher (from halo reach), and a concussion rifle (even though it shot green bullets). Oh, and a big purple hunter.
So yeah, i hope all of those were just placeholders for the real game. Also, the effects of firing guns and waterfalls look pretty crappy, so i hope they change the graphics around a bit.