Trapped in Slender with Richtofen and Medic (Richtofen X Medic X Reader)

Correct me if I'm wrong in the order in the title. So I was bored and I wanted to write a story like this with Richtofen and Medic as an X Reader (that is what they're called right?) and I was thinking about having it set in "Slender the Arrival" and I'm probably gonna do another like this only set in "Five Nights at Freddy's" and there will be alternate endings so everyone is happy.