Overall great, but the movement, mainly during all the backtracking, just wasn't fun enough to carry it. You have a dash and that's it, the charge dash is too situational.
It might not be Metroid with Shinesparks and such, but maybe up the default walk speed at least? The rest of the game wasn't outstanding enough to make up for it either, besides the map being very open, even for a metroidvania. I like how there are 3-4 ways to enter the area with the Dream Nail.
What's up with Darkwood's popularity recently? I know Pyrocynical made a video about a week ago, but I started it before that, because of a friend recommended it to me like a month ago. And I think I saw it mentioned elsewhere somehere inbetween too.
I generally don't play horror games, so Darkwood scares me enough that I only play for maybe half an hour during daytime. Might take a month to get through.