Echoing what others have said about movement and hitbox, I think a potential solution to both is to reduce the size of the hitbox to include only character's legs, and not the head. As it is now, the hitbox represents a tall character lying horizontally into the Y-axis of the environment, but this is a simulated 3D environment where the character should be standing up, extending into the Z-axis.
For some reason the aesthetics of the door flanked by candles indicating progress struck me in a very positive way. Nice touch.
I enjoyed the game. Thanks.