The presentation was polished to a very high degree. The gameplay felt a little uninspired though. By that I mean the level design was your typical puzzle platformer. I don't really think this is a big negative though since it keeps the gameplay simple enough to be beatable by game jam standards. I did encounter a bug where when I split I created to copies of myself, which I mean too full on copies of myself, and not the intended split mechanic. And for controls, use the KISS principle. Keep it simple silly. Since You are using the mouse to shoot, you could have had the split option be right click and the switching of characters the mouse scroll. This simplifies the controls drastically and makes it more enjoyable for the player.