The main mechanic is really nice, I didn't expect the double vision but I find that it was a perfect way to introduce a new difficulty to the game. The level design is great as well, I did immediately fall through the holes the first time they showed up because I couldn't really tell they were supposed to kill you like that. I think a bit of clarity on that would be nice, there was also I think the sun? In the game which was okay but often it would reflect glaringly on the glass floor and frankly it made it hard to look at the puzzle for a long period personally. I think that the tutorial posters in the first few levels could also include an option to interact with so you could view it closer.
Other than that, very clever use of the theme. I'd also like to commend the design of the game's thumbnail/cover, I think that it is really cool and really shows how much you care about the intended style of it.
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Thanks for playing and for the feedback. I'm a firm believer in letting the player work things out for themselves without too much explicit instruction, but that's always a tricky balance to achieve in a jam. The posters were a last minute addition in case any players didn't bother to read the instructions on the game page, but by the time I realised they were too small to be any use it was too late to change them!