In the torture chamber, the tattoo on Munkar's head switches from its usual position on the left side to the right side. When he appears again it is back on the left side.
In the first battle sequence, Stalker kills one of the scumbags with a large bow and arrow that seemingly materialized out of thin air, and vanished before the next fight for the rest of the film.
When Deathstalker gains the "Sword of Justice" in the cave, the sword glows blue light. However, when the camera cuts and then shows another people in the cave, watching the sword, the light is red.