Your comments made me imagine a Norse variant where when you retire Ragnarok starts and you just fight giants, monsters, and other uniques until you (inevitably) die. 
(Also, I recall Garm and Tyr fight each other at Ragnarok, but it was Fenrir that bit his hand off wasn't it?)

(Also, I recall Garm and Tyr fight each other at Ragnarok, but it was Fenrir that bit his hand off wasn't it?)
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