Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Byrhtnoth	Kill ten viking squad leaders.
He knows most who most has tried	Reach level sixty.
Luck is one thing, brave deeds another	Win ten games in a row.
Mark it zero!	End a game with at least ten kills and zero deaths.
Ragnar Lothbrok	Win one game as the leader of a squad.
Saxon dogs!	Kill ten saxon squad leaders.
Tungur hnifur	Kill an opponent using a throwing dagger.
Valhalla can wait!	Revive a hird brother.