Okay, I like the idea, but the execution could be better.
First thing im gonna say, is that I didn't progress after the first code puzzle, because I got stuck in a corner because of a glitch, and didn't feel like going back there (screenshot below)
The code thingys felt like an after thought, it was a platformer with random code thingys thrown in there, so maybe have them somehow incorporated better to the gameplay. (I don't really know how, but somehow, very good feedback, I know)
And the fact that you couldn't move in the air, was so bad, and because of the slidiness of the player, I always ended up sliding off the platforms, so maybe you should just be able to move in air.
Also the quick jump thingy, it felt like a bug rather than a feature, because like it makes no sense, if you tap to the other direction when jumping, magically you jump instantly, and that "feature", needs some coyote time, so if you press the opposite direction little bit early or late, it would still work, so it would at least feel fair, because now it works just 50% of the time, if you press it like a frame late.
Also the graphics, you should have just made art for the UIs, because just having some default Unity sliders and textboxes there feels just weird.
And the background is really bland, you should add some random shapes moving there, so it would look less bland. (the 0 and 1 do a little bit, but at least in the starting area)
And the death particles are really bad, they move so slowly and then just disappear instantly, you should make them move a lot faster and farther, and fade out, or shrink, or both, so it would be more satisfying. Also the respawning should be a lot faster, the camera should stay where you died for like 0.4 seconds instead of like 4.
Also there should be a, checkpoint taken sound effect (also particles), sign opened sound (just use that page flip sound like in the menu), and a cool increasing in volume very epic sound, in when you choose yes or no in the do you wanna help thingy.