The particles and lighting are pretty, though some of the transitions between lighting colors seemed rather abrupt. Like crossing over the edge of a tinted rectangle, which may very well be how it's implemented.
I'm not a fan of precise platformers so that colors my experience here. I felt that difficult jumps were out of place in the atmosphere of the game. I stopped playing after exploring everything I could find without getting the blue potion which I assume unlocked new content. But I found that sequence of jumps frustrating to the point where I wasn't willing to continue. I think some tweaks to the players movement could help there. The fact that the sprite sinks to the ground and then slowly rises after each jump is visually distracting, though I don't think it actually effects the next jump. Also, it felt like if I jumped right as I ran off the edge of the platform, in the place where I intuitively expect to get the longest jump, I instead got a very short jump. But if I jumped a few pixels earlier I did get a long jump. Maybe that's intentional but it felt wrong to me.
The only memory I got was the spider's and I'm not sure why. I passed it on the way in and heard it's monologue. Then when I came back later it's memory was there instead and I don't know what I did.
I liked the tone and I think I would enjoy exploring more of this world.