I liked the atmosphere and the environment you made. Gradually climbing up the spiral staircase of the lighthouse, knowing that something sinister and eldritch is going on, definitely created a building sense of dread and suspense.
The journal entries were well written, and the illustrations were especially beautiful.
Unfortunately, I struggled to enjoy it properly because my humble laptop just wasn't up to the task of running it smoothly. And it crashed with a fatal error message when I picked up an item; I never got as far as lighting the beacon.
Overall, it seems fantastic, but I'm basing that less on my actual experience and more by extrapolating the good points and imagining how it runs on a better computer.