Yeah, that was pretty unique. Congrats on your placement!
After three attempts, I figured out what was messing me up and finished the game. Despite the instructions, it seemed my brain associated left character -> left control, right character -> right control. If I ever got Lapis on the right and the Rhubarb on the left, it felt like I was controlling the wrong one.
Other than control issues, this is great! Good job all around.