Liked this a lot! It’s really well outlined and makes me want to explore. I would say it might rely a lot on improvisation - part of the fun would be moving between and within the levels but I’m not sure how well I’d handle that as a GM without more space to think / to structure the activity. Perhaps mini-quests on different levels would help?
Also, the levels are repeated - once for outline, once for the reaction - perhaps this could be combined? And the key personnel is really useful but really tiny! And I wasn’t sure why the Deep Deep Down was spared the crushing / healing process. That’s quite mysterious and could be developed a bit more - is it safe for now, or for ever, or is something weirder happening?
Anyway on the whole I think this is great. Maybe a bit of development of the information design would improve it a bit, but the set-up and the writing is really evocative - I think you could probably make this a 12-page zine tbh!