Hi, I thought this was a great little PICO-8 game! I especially liked the art style and reading all the lore; it provided a very interesting backstory. I agree with some others that the wall-jump has an unconventional feel not needing to aim your jumps. I just picked a wall and then spammed the jump button and if I ended up at the top of the tunnel on the wrong side, I just dashed the correct direction. About the black screen: I encountered it in Safari and Chrome but not on Firefox. I'm using a Mac. It happened at seemingly random times, so I can't help there. I'd love to see this game expanded with more characters, abilities, worlds, and lore! :)