Well done on totally breaking the game haha it took me a while to figure out how to fix it, will definitely need to think of a better game for the games release.
But for now, run the registry editor (you can find it by tapping the window key and typing registry editor). Once there, open HKEY_CURRENT_USER and then SOFTWARE. Within there, find the folder 'FinalScene' and delete it. That should reset the input to defaults!
Thanks for letting me know about this issue :)