Hi, the reason why it does not work is because this version of the game is set to keyboard by default.
You have to press "O" to switch the input mode to controller and play with your xbox controller.
Yeah, it's not intuitive, that's because it is a developper key, this version of the game was intented to be played in our own stand at a convention, where the game was correctly configurated and where developpers were around the players to check if everything works fine.
Thank you for playing anyway :)