This is a nice little puzzle platformer and I really liked the mechanic. The difficulty ramp is spot on. My main complaint is that I really wish you could control the WASD character using the arrow keys + CTRL or something instead. I'm not sure if that was part of the challenge or not - I don't think it was intended to be - but I feel like you're at a disadvantage unless you switch your dominant hand back and forth to your preferred control keys. Having the option to use CTRL with either to control the opposite character would be awesome! Nice job