I got thorn, it isn't worth the trouble. It needs another buff, don't worry about it But to answer your question I had atheons epilogue (which is void) and void shotgun along with a void machine gun. So that way every kill goes towards the bounty. If all else fails, run around the map with a shotgun and pick your spots. Hope this helped [spoiler]Thorn isn't worth the trouble though[/spoiler]