Well shiiiiiit. There didn't used to be a bug. I did play through all the levels at one point, but it looks like maybe a line got deleted with me noticing...
I'd put out a patch... but Jams! Whoops.
Anyway, thanks for playing! In the hypothetical "full game" there was going to be different text at the beginning of each level explaining only the bits you need for that level. But I wanted it to be a bit puzzly, so as you went the notes would get more sketchy and diverge from the instructions and you'd have to intuit a few things and experiment. But! With virtually no time on the clock I had to write the instructions that would work for all levels all at once, which didn't leave a lot of room. Oh well, I'm just happy I got something kinda like a game out!