So, do keys A B C in Root Room acctually exist?

Running with Steam on Ubuntu 22.04, title screen appears but nothing works to click Settings or New Game button. So game does not work at all.

Will any Steam achievements be added and when?

I'm stuck trying to find the operating system for the exosuit. Any tips?

There's a screenshot on the store page that shows a pause menu with inventory and settings. I've seen nothing like that in the game. Is it simply cut from the demo? I'm using a weird aspect ratio monitor temporarily, so I need to adjust the resolution. Anyway I can't find salt to decrypt the password and I'm wondering if something interactable is just out of the screen. The game feels interesting otherwise but I'm stuck, so I'm moving on for now....