Thanks a lot for your comment. This was our first attempt on a Game Jam with so little time, and we found ourself with only 3 hours of real time to work on this.
The arrow keys work too, but I could not update the game to change the ingame message about controls.
Also, our 3d Modeler made the assets but we were almost out of time and we could not add them to the game, so I had to just keep the pre-made assets :(
Thanks for all your feedbacks, we will use them to make it look like more like a game.
Thanks a lot!