As Dominic said it really reminds me of those 2D flash games you could find on those flash websites (style wise).
I had little bit of frustration on climbing part because I couldn't get it at first so when I would die I had to do the whole parkour again lol. Also there's a bug on web export where music doesn't loop, but I think it's a Godot bug not your fault, two other games also had the same problem.
Also I wish Camera transition from one section to another was faster, going from one line to another made camera move left-right slowly (at the start on the slope) and I felt little bit of motion sickness.
But, no worries, it's awesome
Well done for the first jam!