Dude your sound design and graphics look amazing! Things rustling in the trees and catching glimpses of whatever I can barely see really amps up the scares.
My only complaint so far is that Slenderman seems to crawl around REALLY fast, so escaping from him once he appears is impossible, and with him suddenly showing up behind you randomly, such as in the church towards the end of the video or even his head poking through a wall being enough to kill me it makes gameplay brutally difficult.