Pure soul.
I'm not sure if I skipped an explanation on the eggs considering I skipped the first egg then went back for it, I might've missed some dialogue. There's probably even some alternative dialogue/dialogue that doesn't appear if you, say, don't crush the spider for example. I don't know, it's nice to feel like the game isn't 100% linear because you can do things like that, though maybe specifically in the egg case if there was some dialogue you could have the bird speech bubble from a mile away "what are you doing you idiot here is egg explanation"
By the way, I'm subtley disappointed that wall jumps aren't buggy in that you can't perform a frame-perfect wall jump that only speedrunners can do. Or maybe I'm just a plebian. There are a lot of games with weird wall jump tricks that add depth to gameplay even if they aren't really intentional.