Torment
Victims of Slenderman report being toyed with. At first it begins with something simple such as looking into windows, but it can become as bad as Slenderman coming into the victim's home while they aren't there and moving things, or even stalking their every footstep. Victims often report developing a paranoid obsession or showing physical symptoms of their terror called Slender Sickness that is literally the victim being scared to death.
After further research i have uncovered more psychological ways for Slenderman to torment his victims. For one, he may run a finger over the back of your hand when you reach around a corner to turn on a light as means to give you chills or test your bravery. This is one of the first signs of his attachment to you as one of his victims.
People who are tormented by Slenderman will often be paranoid, thinking that the slightest creak down the hall could be him. To refute this notion, Slenderman is usually an extremely light walker. If you hear footsteps, it is likely that he is either stepping heavily intentionally or the steps are those of one of his many proxies. Slenderman may not lie, this being one of his weaknesses, but he can tell you the most terrible truths. That is the scariest part of what he tells you. All of it is, or could soon be, entirely factual. A theory as to why this might be is that, true to the nature of most german fae mythology, Slenderman is prevented from lying as a means to make them easier to trick. Humans can't be completely helpless to them or we'll die out.
report being toyed with.