A few parts where I got stuck, one was just being blind but there were minor spots I would've changed/improved to make more sense. The secret levels required scouring the developer's social medias, images in tweets, a small piece of audio like 15 minutes into one of their trailers, etc. but now can be figured out purely in game. I had to cheat to find out where the hints were/where to use them, but if I had seen them I would've known what to do so it's not impossibly obscure. Note that there's a point of no return where you have to restart the game if you missed the secret.
