Update after playing it today:
When you load back into your Game, you have a brief Period where the HUD is visible before loading takes Place.
Controller does not work.
Logbook sub-menues should return to Logbook, not main Menu.
Mousewheel to scroll through Controls in Settings doesn't work. Despite being on Keyboard+Mouse, Swap Weapon is bound to Controller D-Pad.
Gameplay Tab is empty.
Throw Weapon does not work.
I found Artifical Wings 1, Hover Dash, Dropkick Piston, Kickslide, 12 Grenades and 400 Health, aswell as Security Pistol, Pulse Rifle and Shock Gun before finishing the Demo. Also fought 2 Bosses both of which seemed to easy. Hope that's all and I didn't miss anything major.
I think there could be a bit more Air control, I often found myself just slightly missing a Platform. And Dash could be on Ctrl by default, but I still think this should be played with some Form of Controller/Gamepad/Handheld, and you can rebind Controls anyway.
Zoom in/out on the Map could be nice, and I felt like it had a bit to little "finding myself back in a previous Position to no directly know where to go next" kind of Level build, but I never really was lost or had to backtrack through already cleared Areas apart from after finishing the Demo when I was tracking down the remaining Items.
I also found no Weapons before finishing the Demo, so if that's not intended, the Route should be reworked.
Saferooms take up way too much Room, they should just be a single Cell. Also felt like there were too many, but that might be because of DD. Same as with Boss difficulty.
All the Equipment hat at least its basic uses apart from Dropkick, Grenades having multiple uses is nice, wish other Equipment Options had that aswell, but it ofcourse doesn't make Sense for all.
You can extemely easily walljump up Walls with slight inclines like in Safe Rooms, and you can't traverse upwards into a different Room when the Ceiling is open, both of which felt not intentional and should probably be adressed.
Atmospheric it's pretty nice, but I wish it had more of a Story to it.