This costume is the armor worn by Halga the Wise (Asbjorn "Bear" Riis), who is the 10th warrior to join the group. This specific armor is worn during his fateful battle against the Wendol, when Halga is killed.
The armor is made from a leather base that has additional straps of leather which intersect each other. Attached to the leather are sections of thick rope that run down both sides of the torso and wrap around the upper arms. This armor has been splattered with stage blood and include a pair of bracers and a belt, both of which are made from leather and have steel plates riveted to them. Also included with this costume is a pair of dark green leather pants, light brown leather boots, and a large wool cloak. The pants are heavily bloodied and come with a zipper fly that is hidden with a patch of leather. The pants, boots, and belt have all been marked with “Halga.”
The metal greaves are actually from the show Spartacus, but were added to make the costume more "complete," although Halga has a slightly different style of greaves during the movie.
The costume has a COA from the Prop Store of London.