Alright, first things first, I love old school 2D pixelated games like this! Brings back memories of my Atari days... I mean, no, I'm not that old! Stop looking at me like I'm old!
Right, now that's out of the way let me go through some other feelings I had. I love the slow build-up of the story, slowing dropping hints room by room as you figure out more puzzles and mysteries.
The hidden passages were incredibly well concealed, and cleverly placed! I found myself looping back a few times before I realised what I was meant to do now and again, which is the sign of a well-made thinking game!
Finally (and SPOILER ALERT for anyone who hasn't played this yet... Even though ultimately nothing hugely spooky happens, the atmosphere is amazing! I always felt like there was someone, or something, watching me. I was hearing footsteps, I was imagining things following me... I was a paranoid wreck at times!
Awesome job all round, I had a great time playing this! Keep making amazing things! =)