In the native build the gamepad works. A bit weird is the "press anything to start" when you have to press start, so maybe the message should read "press any key or 'Start' button"...
When moving away from the wall at first the character stops and I couldn't go on until I stopped for a moment. Maybe that's intentional, can't say whether it's the same with keyboard input.
Within the game, "Select" resets the level (as is said in the table on the game's page). Maybe there should be a selection of "Continue", "Restart Level", and "Quit"?