I'm quite a scaredy cat to begin with so the first time that grey thing popped through a door I gave quite a shudder! I liked the mechanic of burning things to keep the lamp alive, and felt the environment felt ominous. I found one bug, one mistake, and have two suggestions.
If you try to jump out of the parents bedroom (like me because you got scared), only to find it out it doesn't open it and can trap you, can be slightly anticlimactic. I got like wedged in a corner and had to restart.
This seems to be made in Unity, I found that if you literally just walk out of the wall nothing blocks you, same with the tree's. Slapping a couple collision box around the estates walls would prevent wanderers like me from walking outside.
Also (this is purely your choice) it might be interesting to keep the lamp still when walking and make it swing when sprinting to offer two ways to approach exploring the house, slow and steady, or fast and frantic. The constant moving got a bit distracting for me, but if you left it in I could see how it would naturally create a "distorting" horror effect. I'd leave that up to you.
Other than that, I enjoyed the game! Even though I am admittedly not a horror fan in the slightest, this game provided a good scare! Also were the family photos just photos or did they tell a story that I missed out of my rushing around?
Thanks for making this game!