I was a bit dubious at first whether exmortis even was a point'n'click game, it seemed like a simple, if very spooky, flash toy with no real purpose, until I found the locked safe and figured there must be something more going on than I realised at first. Even now (I haven't completed the game), I'm not totally sure what the eventual goal is, but a little point'n'click experience has taught me that it's almost certainly to escape the house (express solution: don't enter the house at the begining and walk away while you can!).
So far I've reached the library (pictured) and figured out that I need to collect some symbols - I don't think I have them all. Post hints, and ask for help, in the comments to this post, but for now I'm off to bed (to have nightmares) and I'll be trying to complete this one in the morning. [hosted at newgrounds].
PS. Ultra-simple first hurdle hint: click 'play this game' on the newgrounds page to play this game!