Man, nothing makes your game look bad than wrong scale and out of bounds regions. The game should run in lower resolution. Also these jumps shouldn't be that high! I'm guessing that you have an ultrawide screen with 144 hz refresh rate. I gotta modify the game so it detects it properly.
You've seen about 1/3rd of the game, missed one of the doors that leads to room with collapsed ceiling. Left Shift + z + x are pretty close (unless you have qwertz keyboard), I'll have something for that occasion. That blue screen happens when you're out of bounds area. Lame, I know.
Next demo day will be about combat with much easier puzzles, I think it'll be much more enjoyable.