This was quite difficult, but I did finish it after a while. I’d recommend adding more checkpoints in every area. I’d agree with others that the beginning is hard to understand, so you could add a better tutorial too. I might not have figured it out if I hadn’t read the description first.
Movement in the 3D maze is far too slow, even when holding Shift. You might consider speeding it up quite a bit.
I also noticed an issue with the “Move together only” part: If you hold down opposite keys for one character (e.g. A and D), you are able to move the other character without the timer counting down. I’m not sure if it is intentional or not, but it did make the area much easier.
Good work!