It was a really cool game, but I couldn't win.
-*-SPOILERS-*- (sort of)
At the level shaped like an hourglass I dropped straight down through the middle before climbing up on the side. When I was going back however, there was no way of getting back up through the middle of the level. The only way to get up to the door was by wall jumping one of the sides, which meant that by the time I got to the top, there were more clones on the bottom, and by the time I got to the bottom there were clones int that unreachable part again. Since the clones' movement is based on mine, it means that climbing up to the door will spawn clones faster than I can collect them.
The game is very interesting, and well done, and you really only need to just add a block below the hourglass or something to make it feasible, so you still get a good score.