Thanks EetuH - You'll be pleased to know this is actually something we have been addressing and fixing up ever since this demo came out a year ago, character and camera movement especially. We are a way off of a final UI pass while we are still nailing down mechanics but scrolling menu support for controllers in the Unity engine is just not well supported and will probably be something we switch out for pages, either way there are fixes on the way and we recognise the reasons your frustrations.
Not sure if we will do an updated demo here, but if you are up for joining the Semaeopus Discord (www.discord.gg/semaeopus) then I'm sure we'll be able to let you know when we have made these improvements and the controls are ready for a second round of feedback during public BETAS.
Thanks for taking the time to play and share your feedback.
Best,
Rich.