Really fun! Best feeling game I've played so far from LD46. Putting in a timer and the ability to replay the levels would be a great way to get some more replayability.
Presentation wise it's a shame the backgrounds are grey and a bit boring to look at. That and the Banner just saying the name almost meant I didn't try the game.
The skateboard sound works really well but the music got a bit repetitive quickly.
The "Speed" level could also use some better visual feedback that your movement is changed. Rather than the arrows I'd make the ground different like conveour belts