Here's how I see it the first time looking at it, not reading the description at all... *Deep intake of breath*
Stephano is forgotten. Ever since Pewdie stopped playing Amnesia, he's only had a few cameos. He starts coming up with plots on how to get PewDie's attention once more, but they all fail. Feeling a sudden tinge of rage, he orders Slender by bribe to go get Pewds and bring him for a confrontation. After one of the last times Pewds plays Slender, (After finishing Slender's Mansion) he manages to bring PewDie to the wooded area of the Slender game and force the intervention.