This is a really polished fun little package!
It could be pretty hard at times, and I don't think I'm good enough to speedrun any levels, but I see the possibility too.
The moveset did a pretty good job squeezing as much as i could out of the button that wasn't jump, and worked well with the mechanics. The graphics are great, the utilization of the secret pallet for 32 colors helped a lot. There was one level towards the end where I felt the mechanic was pretty unclear and tedious, and the music could have maybe been a bit more lively in some parts, but otherwise a really great experience.
Overall had a lot of fun and see more potential in pico8 (and therefore the limitless potential of the upcoming picotron) to make full games now.