The clone concept is very interesting, the character is charming, and I like the animations and the visual feedback, not to mention the controls. Hitting enemies definitely feels good, you nailed that.
Surviving wasn't much trouble because it seems that not many enemies spawned at once, and the clones didn't help much. But it's a nice start. It would be great to have objectives, maybe waves of enemies, something to keep the player busy. Good job!
The web version also worked for me, for the record.