Guild Wars 2

I remember seeing vids in the summer where you fight zhaithan on foot with a bunch of people. How do I get to that? At the end all I did was spam 2 to kill zhaithan while he stood there crying. Soooo boring, and I get a crappy yellow for doing it. Also, if zhaithan is dead, why do dragons still spawn and why is orr still corrupted? (may have been answered in one of the cutscenes but the story is sooo boring that I skip them all)

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