I tried playing twice and both times the game crashed pretty fast when I collided with something. Often the character would go through platforms but then sometimes he wouldn't. Was that to do with the point and click part of the game? I couldn't figure out what to do with the mouse, so maybe you should write some guidance to the itch page.
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Updated the page, you should be Hovering over with the Mouse over anything that looks out of place or Interesting
As for the crashes only one wall was intentional to pass through but the rest appear to be an oversight of that code, Hence the "R" to restart button being added
Apologies for the Inconvenient Experience