You haven't been able to sleep well for a while. Maybe tonight will be different...
My only problem with it is that it's so short! It was so good though. Great story, the whole Slenderman story really creeps me out, so you successfully scared me in less than five minutes. I would love to see a sequel to this custom story. A much longer one of course. Great job!
Short, but sweet. Not very sophisticated, but good enough at eliciting that unsettling feeling you wanna capture in horror. The decision not to use the ol' suit and tie on... well, y'know, was well advised, I think.
This kinda demands an expansion of the concept, as I've yet to see the Slenderman Mythos committed to an actual game, even if it's just a mod. Amnesia is pretty much tailor-mad for it. Do some brain storming and come up with something longer. :)
I loved how interactive it was. Just because it was short, doesn't mean it lacked depth and story. I loved the feel of it and especially liked how when you opened the curtains, a mysterious figure was staring at you for a split second. Please make a sequel to this, as I would love to play more, with the interactivity. Although, maybe other people would be happier with more length. Very well done. Keep up the good work.
It's okay. Not bad, not great. It's passable. I liked the "Ending".
Be more adventurous with level design on a time budget. Would have been cool, for example, had this been a vertical level with stairs and offshoot rooms, rather than horizontal and plain.
Light entities are your friend, so is fog. Try to exploit them next time.
For a 24 hour custom story, it's not horrible and you're on the right track. Try to be more ambitious with your next work and take it to a proper custom story, one that takes a few months to make. I think you'd do much better.