Hello!! Thanks for playing, and also thanks for all your feedbacks! ^^
I'm currently working in updates that includes a better camera movement system and falling blocks are respawned faster. Also, the basic fire shooting will be more like a "machine gun" style (but with magic stars haha), which will affect the gameplay a little bit, for better (I hope!!!). These and other updates will be available in the next version of the demo.
About the gamepad, after reading your comment, I tried to setup more buttons for movement. But despite I can setup more buttons for walking by programing, I just realized that the engine only works with 1 set of buttons for movement, which is very annoying. I will request an update for the engine, since this can limit how players wanna play. Thanks for your feedback, and really sorry for the gamepad problem, I will keep looking for a solution ><'