Ugh...
The game wasn't exactly horrible, but the occasional mountainous spikes in the difficulty eventually make me quit. I've said this many times before: difficult controls do not make a game fun. Difficulty in a game should be made through strategy or level design, and even then people rely too much on difficulty to make a game "addicting" rather than fun.
The graphics were kinda cool. It's one of the first 3D games I've seen in flash that actually runs. It was used in a nice way too. The filters obscured what I'm sure was a rather ugly and rudimentary setup (I don't blame you for it, it's not like flash can do any better right now). Honestly, the game was kinda fun when I could just wander a bit. I think if you focused less on platforming/mazing style challenges and added some sort of story the game could be much more interesting. The simpler challenges didn't bother me. Up till level 8 I was having fun. Then it felt like one of those horrible Operation style mouse mazes.
Also, artsy game or not, you should always tell people the controls in game at the start. Maybe you could have painted it on the wall or sommat.