Surprisingly Good
-The graphics could have used some sharpening
-The charging up was kind of clumsy
-Breaking a rock caused lots of slowdown
-Pressing shift over and over caused recursive acceleration allowing you to blast right through the walls
-It's a beta, so it's missing tons of stuff (you said that it would, but still)
-The combo system was really difficult
+The sound was VERY fitting, I liked the Negative Barrier or whatever sound
+Flying was smooth and fun
+The idea was fresh
+Other...plusses
This could be one HELL of a great game when it goes gold. Console quality for sure if you put some time into it with upgrades and fixes and whatnot.