I'll preface this by saying your game showed up in my queue and horror games are not my cup of tea. However, I like the style and the presentation. There's not much to it, but it is very solidly executed. I think it could use something to clarify how you're getting hurt, I died in a room with ghosts in it but now that I see comments talking about fake doors I may have been trying to use a fake door? Overall, well done on the jam entry!
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Fake doors make weird sounds, soooo if you didn't hear any weird sounds from the door, then:
A: you were probably just accidentaly colliding with a ghost
or
B: godot is sucking at porting the game to html
edit: just went through the game and yes, the doors do make sounds. So if you couldn't hear any sounds, then that must be a bug within godot, or you had your volume on low.