This game is really fun to play. The collectables were too compelling for me, so on my first save I got all 833. The plot is interesting with some small laughs, and I really love the idea. Great job! After getting all the electrons, I speedran the game a few times, and got a time of 58 minutes (Any%). I also enjoyed the music a lot.
However, I do have a few problems. For one, the powerslide trick felt very weird to control, and it felt like some challenges, like in Powerslide Playground, were out of my control. Also, during my speedruns, I kept on running into problems with electrons. Sometimes I would launch up and travel through one, but I wouldn't collect it. Sometimes I would just walk through it and it wouldn't register. I'm not entirely sure how you could fix these problems, as I'm not very familiar with the engine, but maybe some indicator showing how far you'll go with powersliding would be due? I played in Minetest 5.6.1, game version 1.1.0.
Once I had finished the entire game, I went into the code and unlocked editor mode. I was really impressed with it. I really liked how there were blocks for everything, even the things that ended up being entities out of editor mode. It was fun trying to build my own level. I couldn't figure out how to get launch pads that could launch you higher than one block, and I couldn't figure out how to get gateways working either.
Here's how I think this game could get even better:
I would love to see something special for getting all the electrons, maybe a secret good ending. I also think it would be cool to have more levels and electrons. I also think more abilities would be fun, although I know that isn't likely to happen. Also, bouncers deserve more than being stuck in the farlands, so if you make more levels, include them.
Overall, this is a great game, and I recommend it to anyone who loves parkour. Thank you for reading through my comment.