Is everything that is available in the Demo solvable? [Spoilers]

[Timbo Jones]

Probably Story Spoilers at the Start!
I guess it's not in the demo to find all the 8 (or well, seven I guess) red letters and the Note sheets? . That seems to be Story events and I don't even expect to solve that.

But if I can access a puzzle, or parts of it is it always able to be solved?
For a concrete example, I got the Boiler Room hooked up to the Laboratory . "Solved" the Periodic Table and even got the Shelter Terminal ready.

Switching the levers doesn't seem to be doing anything though? (And I don't even understand how the Periodic Table correlates to it, if at all). Is this solvable, can I do this or is this not a thing in the demo? (Judging from the Shelter terminal I have a hunch for the reward, which would be dope)


I just wanna know if I'm wasting my time or if this is do able. :D

[Pineapple]

so far i've been able to solve most the puzzles i've come across, or at least made progress.

specifically the Lever puzzle you mention... your about 80% of the way to solving it.
also the relation to the shelter is a different unrelated puzzle that just also connects via the laboratory

[Timbo Jones]

Did you solve the Office safe combination?
I also found another one in the study and also a replica of the room with the vault in the Blueprint Room (Forgot the name. Rare room) The vault replica is interactable when you have the magnifying class

[Paper Boat]

In regards to your first spoiler, The music sheet puzzle is fully solvable as well. You'll just need to explore more rooms to find the rest of them, but I have found all 8 and received the reward.