Hey, I got pretty far and this is what I have to say about your custom story:
It's good to see the amount of effort you've put into making this. Actively listening to feedback will turn you into one of the best custom story makers!
I loved how big it is and how much you get chased by monsters
I had a lot of fun.
Here's some feedback:
-When going down either one of the staircases leading to the maps for key #1 and #2, there is no wall, floor or even a ceiling.
-At the first part with the water monsters the sounds loop in a weird way. As soon as you're on top of a box it stops for some reason.
-Sometimes you hide things a bit too well, this is about the fourth time I'm stuck on this Custom Story.
-Did you get bored of translating? I'm playing the English version, yet half of the letters are still in Portugese.
-You should make mementos for the thoughts your character thinks, rather than put letters down.
-Same goes for flashbacks. You left notes that explain the story, like the ones that go something like: 'No Daniel, don't kill me, I thought we were friends!' In my opinion it would be awesome if you could replace these with flashbacks, just like in Amnesia: The Dark Descent, where the screen flashes white and you hear a flashback.
-Attic means highest room(s). It should be on the highest floor, you have it downstairs somewhere.
Another good thing is that you seem to give just about the right amount of supplies
I personally like the idea of having keys with no names, as it feels realistic.
I hope this helped.
Now where I'm stuck:
I'm now at the part with more water monsters. One is behind some big pipes in the water, and behind him is a locked door. I've tried going to the right of that and using boxes and a chair to get over the fence, but after the second fence I got killed by 2 water monsters. What am I supposed to do here? I'm not really sure what the map is called, but it was right after the 'creepy corridor'. It's NOT the first water monster map.