First I dropped the wall heights to 4 meters, down from 8. This makes it so the camera rarely has to adjust its height to avoid clipping.
I also added a noise pass to the wall tops, which really helps to break up the lighting and make it seem more ruined.
I took out the side paths across the water, to make the bridges more strategic, and moved one of the doors to another room to force the player to go through it.
I also added a light to a room to make the door more visible, and the metallic columns shine more.
I took out the bubble shield a while ago, and the game feels better now. Now you have to actually dodge and/or use the environment to your advantage.
The game is simple at this point, but it is fun...