Ok, I have to say, the shader for the dream (the first scene) it's perfect. I was thinking it before the game said it, that means you have captured it perfectly.
That "shadow" man at the end was creepy as hell, I feel a bit of fear at the first time haha.
Just a couple of recomendations:
- Increment the gravity of the character, that will make you feel much better about handling it.
- I think you didn't use the Tilemap integrated solution from Unity because I saw a bunch of white/transparent edges in the second world. Also, maybe your camera is not pixel perfect.
Overall, I like a lot the vibes and feelings. It really made me think I was in a dream trying to escape. Very good job!