Unfortunately, my device couldn't extract this particular .zip file, so I used your gamepix link below to play the game.
The rolling and the rocket transformations felt fun to use, though the latter was also unresponsive. The game says to double click, but that doesn't work, so I end up clicking a bunch of times until it works.
The mechanic with the platforms that turn upside down just does not work for this type of game. I'm having fun blasting through a level, and now I have to wait for the platforms to appear? And since this is a runner there are some points where I have no method of waiting, so the platforms turn over and my character just runs to his death.
The tutorial spouting long text while I'm in the middle of trying to keep my guy alive also wasn't that helpful. Maybe you can make it so that the game pauses when a textbox shows up? Or maybe you could design the early levels in such a way that a wall is there whenever there is a textbox, so that the player can read the text at their leisure without worrying about their character running to their death.
There was also some lag, but that might be the website and not the game.
Overall fun game that could use some reworked design in a few places.