Hiii! Thank you so much for your sweet words! 🤍
Here is a mini-guide on how to unlock Flins' 4th ending:
On the first night in the lighthouse corridor, make sure to click on the strange photo on the chest of drawers before the timer runs out, and choose the option "Is this a joke?". Later, go to the cemetery "In the evening", turn "right", and approach the grave.
Good luck! 😉