Wow, just wow. Great idea, great art, great level design, really satisfying ding.
Viewing post in Portal Panic jam comments
Not too bad - I originally avoided making platformers in pico-8 because it felt too hard, but after looking at some examples of how other people did it (especially Celeste Classic) it gave me a lot more confidence. Coincidentally I had been working on a platformer a few weeks before gmtkjam so I was in the right mindset to reimplement a similar system. It wasn't too bad in the end! :)