Slender lives in a large abandoned house. It's impossible to catch him! But he has a weakness. There are 8 diaries in the house, each diary is a part of his soul. You must find all the diaries and not fall under Slender's hypnosis. Genre: Adventure, horror stories. Advice from jam'a: It's very stupid to try to beat Slender, look both ways, beware of turns, he can attack from around the corner. Sometimes Slender will kill you, just like he did in the original game. A camera will help you here, a bright flash scares off Slender. P.S. I've only played Slender a few times, maybe a gag. Studied Slender from Wikipedia.
By the way, there is one bug in the mission. This is due to problems at the root of GTA San Andreas, sometimes when looking for diaries, you can stumble upon a random ped. Alas.