Congrats on releasing the demo! :)
I'm stuck on the very first room though, and it feels like I'm missing something in regards to item usage (nothing happens when I click on the thing beside the door and the ventilation shaft, and inspecting the window cleaner tool doesn't seem to do anything, either.)
Also, you might mention that it's necessary to unplug any gamepads you might have, since having a controller plugged in at all makes the camera go haywire when you start up the game (it took me a while to figure out what was wrong despite the mention that controller support is still worked on.)
Wow, I didn't know that. I'll try to get that figured out.
Regarding the first puzzle, I think a quick solution to that, that I should have thought to include is a displayed Name for each of the items. That way you know exactly what the tool is. Like that one in particular, isn't a window cleaner lol. So that's my bad, I should have made that more clear.