Great game, good take on the theme, and a really unique interesting execution. It's very rare you see a story in gamejam games, so good work! More details:
Presentation: Lovely consistent art style, with good music and sound effects. Text never got in the way, and was a fun addition. Small bug: he animation of copying yourself doesn't keep playing if you hold e to make multiple copies, but that was from before I figured out scaling properly.
Mechanics: Good platformer mechanics! Only complaint was I felt like I should've been able to expand the blocks underneath me and get pushed up, but that's really a physics limitation.
One more note: I wasn't sure on the rerun of the puzzles, it was fun seeing the story, but would've been cool to add something - maybe you're being chased the second time?
Overall, incredible work for a first solo jam, even better that you did it in 48 hours! I would absolutely play more levels of this!!