ok...i don't know how to get past this one part...i don't know the name of the level but i'll try to describe it...You have to save a spartan from Xerxes encampment because he was captured..i'm at the end where there's an executioner, and immortal, a bone golem, and some guy..idk wat the guy is, but i can't kill him and i can't get passed the part until i do...help?