Nice try on the game! It's a beautiful game, alot of nice assets and 3d modelling work. However, it has problematic design.
Whilst you might have WASD for movement and E to interact, without an interface UI, it's hard to know what, when and if I can interact with something. Yes, there's a key, a box and the tome, it's just a small polish thing so I'm not spamming E whilst looking at stuff and waiting for the line trace to match up.
Meanwhile, the second room with the orbs and the tome, it's problematic because there's no direction on what to do at all, yes, you used lighting to draw our eye to the broken orb, but what do we do next? Do we select the one that's missing on the page? Select the symbols that ARE in the room? Nope, neither one. Does order matter? Clockwise? Anticlockwise? Also neither. That particular puzzle needs more of a guiding hint.
Another polish is that there's no way to deselect symbols, nor is there a way back out without pressing comfirm and starting over again. Granted it's not that far, but even so.