Pyre At Will is an achievement that requires the player to make a barbarian pyre ship from arctic pine logs.
Requires chewed bones or mangled bones, use pyre area west of whirlpool bridge (guaranteed drop from lost barbarian or confused barbarian found in the Ancient Cavern). If mangled bones are used, a level 106 ferocious barbarian spirit will appear. It is not required to kill the spirit that emerges from the pyre.