That is solid feedback! I need to redo these texts, i.e. my intent was to give some sort of a clue which door to choose, which I admit doesn't work at all in the current version, and I am sorry about that! I will think about visual clues too. I agree that it is no fun to guess every single door until you find the right one.
Also, a good point about keys; I think they don't add much to the game and unnecessarily make the labyrinth more difficult than I wanted. It should have been a relaxed run that takes no more than 5-10 mins. (There are two closed doors: one is at the entrance and the second one is hidden somewhere :-)
I will fix the aspect ratio shortly. I overlooked the issue.
Thank you!