Hi Adman! Cool prototype! I like this kind of game.
First of all, I started the game, and tried to select the menu options with a controller. When I select "CONTROLS" with the controller, the game stops recognizing controler inputs, and the only way to go back to the main menu and start the game is with the mouse.
The game controls feel ok. I think you could make it slightly faster, and the jump a bit less floaty.
Right now the character turns into the direction of the velocity and it works, but for this kind of game, perhaps it would be even better if the character "strafed" left and right. And you could lean it to that direction. (apologies for the terrible drawing).
Right now I don't think there is any incentive to be in the air, and turn the character to do tricks. One thing that you could add is a "score" system where you need to trick to increase (tony hawk style), or even better, add a timer to each level, and every time you trick, after you land, you get a speed boost equal to the trick complexity. Then the player is rewarded by completing the levels as fast as possible.
Those are my two cents. Keep up the good work!