Stefan Hartz

Stefan Hartz isn't not just some soldier,(in the scratch code he's named soldier 04) like Jakob Kolander, instead he's an commander, which makes him higher than Jakob, being an specialist. His suit is red, and so is the helmet, other than soldiers like Otto, or the first or second soldier. Storywise, Stefan has recently heard about Jakob's fatal bullet to the head, and the killer is Niemcy Zamek. Soonly, after Otto Ruff has been killed, Stefan gets up and goes to hunt Niemcy. After a while, he finds him with the dead body of Jesaja Geier.

Then, Stefan calls Niemcy a moron, and asks him: "Can't you read?" In reference to the sign above the door, saying "No trespassing." Eventually, Stefan decides to spare Niemcy, and turns into dust, leaving his clothes with the dust, that formed the fake body. The dust is later revealed to be Kurz. A material, that was recently found by Jesaja Geier, and his science team.

Fun fact: Kurz, in Polish means Dust.