Well, finally got all my grenade launcher kills, doubles, and badges. Best method I found was Mayhem, tether of a hunter, and fighting lion, and heavy grenade launcher. Now I have to reach fabled in comp, even though I reached fabled last season, and the season before. I think it would be nice if the quest recognized previous season accomplishments. I know I can reach it again...but...it would be nice to be done with this quest.