So, I found all 8 notes, and I asked myself," what now?". Turns out not much of an ending other than dying, typical as it IS a slenderman game as your not really supposed to get that far in the first place...BUT as an attempt to "escape" i found my self outside of the surrounding building and actually falling endlessly (1 hour later still falling)
I recommend that these little mistakes be looked at once again, slendy phasing through walls, the crack in the building leading to outside, and throw in some more upgrades, like a maze inside a building. Other than that Its a work in progress, lets see the best and not settle with "ok".