We're aware of the lack of UI-elements(health bar) and as you can imagine it was due to time constraints. We have decided to move forward where all these things will be improved and/or implemented!
I'm a little bit curious about the jumping part, what made it difficult to control? -if you are able to give details it would help me a lot! :D
The vertical lock is something I'll bring up with my team. But yes I do agree that maybe it should be possible to look more freely.
Thanks for your feedback! :)