American McGee's Grimm: The Singing Bone
's tale features a boar that is terrorizing a village, and whenever the king finally gets frustrated with the creature, he offers his daughter's hand in marriage(which they seem to be prone to do), to whomever can solve the pig problem.
While several people try, it isn't until a young man steps up that things start to get shaken up. The man is accompanied by his younger brother and they decide to split up at the forest's edge and hunt for the boar independently. The younger brother stumbles upon a spear from a forest elf that is sure to kill the beast. Sure enough, when he sees the boar and uses the spear, he kills it easily. He hauls the boar back to the edge of the forest where he finds his brother has spent the whole time in the pub.
Realizing that his brother will take prizes for the deed, he kills the younger one, pushes his body off a bridge and buries his body in a shallow grave where he hit the ground. The older brother then becomes the princess' husband and for many years, his claim to the prize goes unchallenged, that is, until a shepherd stumbles upon the bones of the younger sibling. When he gets to the skull, it starts singing about how he was betrayed by his brother, the man now married to the king's daughter. Needless to say, the older brother's life doesn't become quite so happily ever after when the shepherd shows the bones to the king. While there is at least some death in this version, it isn't quite enough for Grimm's taste, so your work will be to make the story oh so much darker and more vengeful.