The end was quite cool, I liked the narrative for sure! I think you made a bunch of good design choices.
Feedback:
- The jumping sound got annoying a bit quick. Its nice that it is different for different heights but doing a slight random pitch shift on each or having a few sounds would have made it more enjoyable. In the end it is the sound you will maybe hear hundreds of times haha
- The laser guys were cool, I enjoyed that they forced you to move quick but I found them a bit unforgiving. It might have been better to have just a slight grace period before they started shooting.
- Not respawning disappearing platforms are almost always not a great design decision in platformers.