He did not escape death in the same manner like Zaros. It's due to the fact that Zaros' body was different from Guthix's. It's likely that Zaros, in an attempt to save his life and save it transformed his body into energy to avoid death.
Guthix did not experience this, as you're sure. Gielinor had various other manifestations which prove he died. For instance, divination craters that were believed to be the result of Anima Mundi's grief for Guthix.
The world is not well-balanced as evident by the happenings in the world. Chaos is being battered. Balance in RuneScape does not involve a battle between good or evil, but rather between chaos and order. As of now, Armadyl and Saradomin have each won. That means that the order side is ahead 2-0.
Both Armadyl and Saradomin both have their powers increased, in addition, Bandos has been eliminated and Zamorak is weakening. Zaros is also back and while he is considered to be more of a neutral force, he claims that his goal is to bring order under his rule.
I'm often asked questions, so here's the significant quests I completed and the order in which I completed them. If you have at minimum 15 hitpoints, 13 magic and Fire Strike, you can defeat all bosses, with the exception of Monkey Madness.
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