First of all, I love the general vibe of this, I was constantly expecting something to jump out at me.
A little bit of spooky music would have definitely added a lot to that, so you might want to look into how to add music and sound effects for future jams.
I did encounter a few small bugs that you can see in the video, camera was clipping through walls, which can be fixed by changing the cameras near clip amount. Also had a weird moment where I manged to clip through a collider and got stuck in the corner of a room. Wouldn't worry too much about it, it's just the kind of little thing that comes up while playtesting.
I also couldn't tell if my game crashed at the end or whether that was the end of the game. You can add a scene transition to another scene with a simple game over message to signal that to your player. Or just have a UI element activate on the screen.
From the shadow I could tell that the player had a full model, was kind of unfortunate that I could get a good look at it, I assume it's the same one as the minifigures, but I couldn't see them to well either due to the lighting being quite dark wherever they were.
But they game did look really good the models and textures all gave me that Indy horror game vibe.
Really impressed you got it running through WebGL though, don't think I ever had a game that worked when I tried to publish it, well done to you all!!