Cool concept and fun to play around with trying different things, but I couldn't make it past the first level.
It might be good to have some clear instructions in the description, including the controls as well as the objective (I assume collecting the squares will eventually open the pink wall so you can get through but I wasn't sure if that was it exactly). There was also the little pebble looking things which I couldn't figure out what they were supposed to do since pressing E seemed to not do anything.
It would help if buttons were color coded / had lines drawn to the elements they affected, and also for the ones which require a specific number of clones would be good to have them count down rather than up to indicate how many are needed.
It would also be good to add some music and sounds, but I'm guessing you just didn't have time for that. I always make it a priority to add some sounds and music as soon as I have something somewhat playable, even if it's just free assets I find online to start (opengameart.org and pixabay.com are two good sources for free assets I've found)
One more thing, it might be nice to have a shortcut to move to the next clone so you don't have to just hold down space until the countdown runs out.