No worries, Keyboard is fine, but I just have a better time with gamepad. Silly me tried to use Steam as gamepad-to-keyboard solution but AntiMicroX works better.
MuOS should support the RG40xx and Portmaster. I kinda use the RG35XXSP like a small Steamdeck.
I do like this game, mechanics and art. Reminded me that I also had a little bird platformer in the works and it should at least get a playable stage ^^; .