I’ve got the Mountaintop so this no longer applies to me but I’ve got to say this is the most frustrating thing I’ve ever done in Destiny. If a new pinnacle weapon is brought out no way should the weapons you need to use get nerfed in that season and the Heavy ammo economy changed! It’s not like they were good before and especially if you compare them to something like a shotgun. But anyhow rant over and time for some advice and how I got it done. 1. Get on your Hunter and use marksman’s dodge. 2. Put on 5 super mods and use Shadowshot and the Rigs. If you can tether 2 or more opponents (which is a feet in itself) and kill 1 with a grenade launcher it counts as a double kill. If you get your Tether 3 times in a match and use a primary/secondary grenade launcher to get a double kill each time that’s + 1.5% a game. Add on any double kills from a Heavy grenade launcher and your making as good a progress as the quest allows. Side note. I don’t recommend Tether under normal circumstances because of how bad it is but it can help for this quest. 2. The Colony can be good but it depends on how clued up your opponents are and how open the map is. I found precision frame grenade launchers to be more consistent, especially on more open maps. 4. The Birthright is good but if your like me and love using TLW or Mida and don’t want to tank your KD then have a look in your collections for Truthteller. It’s not a god roll but it is solid, especially when paired with Tether and Marksman’s dodge. 5. Grenade launchers don’t work on all maps and it will just lead to frustration if your trying to use them all the time. Certain maps they are king though and then you should go all out. That Firebase map is a good example. Where heavy spawns in the corridor up top and most teams camp either end to try and get it. Use the Colony and flank to the left where the elevator is then tether the far wall where they are stood. I got 5-10% done in 1 match using this tactic. Another good map is that circular space station one, I can’t remember the name of. But it has plenty of tight door ways and choke points where teams bunch up together. Tether thought the doorway and just let loose with Colony.