Fun game and extremely impressive for a first demo.
On my first run, I decided to walk backwards first, hoping to find a secret. It turns out the entire game was in that direction and all I managed to do was skip the intro cutscene before getting lost with no idea what to do and being killed. I'm not sure if this is related, but I think on my next life, the shade was bugged and never spawned
After figuring out what to do, I was unsure if I retained the items from previous lives or if their locations were randomized each time. I think it would be nice to be able to see what we've picked up so far in the inventory alongside the pages.
Turning off the lamp to restore your usages of the monster-repellent is an interesting mechanic, although I didn't feel like it was ever really relevant in my playthrough. I either had more than enough or would die before running out.
The elevator shaft segment was cool although controlling the elevator with 'r' and 'f' seemed like an odd decision over just having a button.
After finding the mushroom and resurfacing, I felt really disoriented and confused as to where I was in relation to everything else, but managed to complete the game by bumbling around randomly.
Fun demo. Looking forwards to a continuation (if that's what you're planning on making)