Oh thank you what a compliment in the end! :)
I'm not normally a fan of puzzles and the last level did create me some issues that started to annoy me (My own skills were the reasoning for that), I was probably able to cheese it a bit, I just slighty nudged over the edge to get the right side to drop down on the button.
But anyway a great game and I especially enjoyed the mechanic where you had to split at a certain point so that once you merged it was the only way to get to the portal/door, that was genious! :)
I was able to break the split at one point, with the other character dissapearing and I couldn't merge in anyway. I think it was in the last level or the second last level, where I just went right on the very edge of the right side and jumpt while pressing split, I think the other character clipped through a wall or something perhaps. I could see the red line, but couldn't merge at any position and didn't see the other person. Took me a while to find the pause menu as well, since ESC wasn't working :D
Thank you for a great submission and a great game!