Thank you for the feedback. We already have a fix ready for scaling the UI properly but are not making changes to the game until the Jam rating is over.
The monster does get knocked backwards when you hit it. There isn't currently any other plan for hit feedback.
The version of the game currently posted is using a 3rd person model with matching animations and the camera placed as the character's eyes. The revised controller has the camera following the animation, but with intentionally reduced movement.