it rocks, i REALLY LIKE how some of the sound effects seems to accompany the soundtrack (which is already amazing) like the heartbeat when on low health or the kill sound. 

The combat is good but can get really chaotic, "luck based?" and hard with more than 2 enemies(heh maybe thats the idea, winning a 3v1 shouldn't be possible), i feel like in some situations not even "getting good" can save you.

Sewers, Subway, Scaffolding(got stuck for a while in this one) and Crystal Caves are really fun levels for me, can't wait to see the Caves in C:U.

thankyuorso