Thanks. I'll make the corrections.
Concerning the graphics, I tried, as many here, to find tricks to overcome the difficulty. Lighting the floors of the tower seemed like a good idea to me; I'm not a graphic designer or illustrator. I understand the frustration and disappointment for the player, but he has to deal with it.
I didn't think that trying to make a little amateur adventure game for a Game Jam was such a serious thing. It's good that it's like that.
This is the final stretch and I will be very happy if my game is next to yours.