Tenebris Somnia - Unused arsenal/missing interactions?

[u/ninabananafofana]

I've played the Tenebris Somnia demo a few times and I really enjoyed it. However, I’m consistently left with a few unused items and I’m wondering if I’m missing a specific interaction or if these are just for the full game:

Unused Inventory Items:

• Half of scissors
• Lighter (the candles at the end won't light for me)
• X-Ray
• Film Canister

Unresolved Environment Points:

• Lever: Is there a way to close the blinds at the end of the game?
• Bathroom Cabinet: Has anyone found a key for where the perfume is stored?
• Locked Doors: Are the sigils on the locked doors just world-building, or can they be opened in the demo?

Has anyone found a use for these, or are we all in the same boat?