It was tough for me, I wasn't able to finish the first level lol... I found the invisible bridge but couldn't cross it all the way, and wasn't sure how the buttons on the cabinet affected it.
yeah hint is really tough. Honestly its vague. Shit xD. The hint tells which color button needs to be pressed how many times and in which direction. After that you have to walk straight in the direction that wood is pointing. Next you have to just interact with the button beside the door. Those buttons are mainly used to move the invisible tiles.