Visible crew/equipment: As Sierge is wrestling with the bear, the shadow of the camera and camera man are visible on the bear. (00:17:55)
Revealing mistake: As Sierge shoots the Tsjude behind Aigin, a protective pad beneath the Tsjude's clothes is visible catching the arrow. (00:47:30)
Continuity mistake: After Sierge has killed the Tsjude behind Aigin, the Tsjude falls on top of Aigin. As Aigin shakes the Tsjude off, you can see the Tsjude's arm down by his waist. As it cuts, his arm is suddenly pointing away from his body. (00:47:35)
Revealing mistake: In several shots with the bear you can see a white blanket used on the ground instead of real snow. (00:18:15)
Continuity mistake: As Orbes is surrounded by the Tsjudes, they fire their crossbows. As the camera turns to Orbes, we see all the arrows hitting him in the chest. That's impossible because of the Tsjude's positions. Orbes should have arrows hitting him from all angles. (00:50:05)