1. How does the world feel?
For the most part, it feels fine. The fluid nature of the world sometimes makes it confusing whether or not the player can go up a slope. Maybe making the path of travel more clear could help with navigation.
2. How does player movement and camera movement feel?
Player movement feels fine. A zoom function on the camera could help with some of the awkward automatic changes when going up and down slopes.
3. General things you like?
The big black enemy already has a menacing feel to it, and the particle effects around it are pretty cool.
4. General things you don't like?
There isn't a clear direction for the character to go. I can see all the puzzles, but I'm not sure where the enemy is coming from in the beginning, or where the lake is. Maybe a minimap could help with this?
5. What do you wish the game did?
I wish the game would guide the player along a certain path. This path doesn't have to be linear, but at least in a general direction.
6. General reaction/comments?
I'm curious to see the puzzles, and how the monster will move while the player is trying to solve the puzzles. I'm also curious if lighting could play an element in guiding the player.