Very pretty and fun to play!
One piece of feedback- I feel like you could have done more with the duplicate swords mechanic. It didn't really make sense that you duplicated every time you reset. You basically would reset twice at the start of each level with no real planning or strategy.
If you ever take this concept further (which would be cool!), you should see if you can make some creative puzzles that make use of the doppelganger protag concept. I'm sure there's inspiration out there.