Lore speculation: who's responsible for Liesa's plight? Given classic Norse mythology, I'd guess Loki, but the version in this game is rather lazy.

Maybe Gull, in a fit of jealous rage?

Also, what's with Fenrir pillaging Nordicia?  I thought the whole point of Tyr losing his hand was so that Fenrir could be chained up permanently (until Ragnarok at least).