We are glad you like the game! Thanks for reporting the bug, we are going to hunt for it next time we have the chance.
Thanks for your encouraging! Sorry for not providing a way to being play without a gamepad.
Online mode is something that we choose to avoid because we don't have the time and resources right now to commit to. But we used to have a mode in the prototype version where two players could play with one keyboard by removing the "block" and "dash" moves. We could add that option next time we have the chance.