This papercraft is Sith Stalker Armor, a type of armor that was cybernetically grafted to the wearer, covering the entire body save the arms, the papercraft set includes Starkiller's TFU1 Shoulder Pauldrons, TFU2 Shoulder Pauldron, and the Sith Lord Starkiller Torso and Shoulder Armor, based on the game Star Wars: The Force Unleashed II. The paper models were created by PepMaster.
Featuring design details resembling those found on Mandalorian and Ubese armor, Sith Stalker Armor presented a forboding and grisly countenance. Historically, this type of armor was favored by vicious Sith assassins who were highly feared within the ranks of both the Sith and the Jedi.
You can download the papercraft model templates here: Star Wars: The Force Unleashed II - Sith Stalker Armor Free Papercraft Download