Thanks for this complete feedback. This is all valid criticism.
I always hesitate to put music because I like games where all assets are made "from scratch" but my music skills are way too low, and the game was already repetitive enough ! As for the tone of the game: from the start I didn't know if I wanted it dramatic or comedic. I just let the fate decide, if you had a good laugh then that's fine, let's call it a comedy game !
I'll think about optimization if I continue iterating on this project, for know I don't know Godot enough. But it is a good case study.
I'm glad you liked the premise since that was my main focus. Thank you again !