Right, so looks like we have got to the bottom of how to get given this quest!
Thanks to the following gamers for adding their info and in turn helping YOU get a new achievement! This was a (fire)team effort
FF7 Ultima, IllustriousYeti, Games Master, mchsTom, CanadianWhizKid, XXXICenturyMattNew Activities To Do
So after all our detective work it seems this is all you need to do to get given this quest:
Once you have completed The Taken King story you will get a mission called Dread Patrol, this is essentially just a mission to set up patrols on the Dreadnaught. You will need to do this next anyway to get given more missions and have permanent access to patrol on the Dreadnaught.
When you have done that all you need to do is complete any Tier event in the Court of Oryx. You do not need to be the summoner here, just take part in a successful event, on any Tier. When I did this with my third character to test it, I just went to the CoO and there were 2 other guys there who summoned a Tier 2. I took part and we were successful, then I went straight back to The Tower and Eris had the quest for me.The Quest
The quest itself requires you to do three things in the Court of Oryx:
Reciprocal Rune Summons, Victories - 6 times
Stolen Rune Summons, Victories - 3 times
Antiquated Rune Summons, Victories - 1 time
This is simply Tier 1, 2 and 3 of CoO, the recommended light levels are:
190 Light - Reciprocal Rune (Tier 1)
240 Light - Stolen Rune (Tier 2)
300 Light - Antiquated Rune (Tier 3)
With a full fireteam, these levels are overestimated really, Tier 2 could be done by three people with 230+ and Tier 3 could probably do it with 290+ but the Tier 3 bosses are on weekly rotation, 3 different ones. So you may find one easier than the others.
If there are other players on top of you're own fireteam, Tier 3 can be made a lot
easier too. There were 4 others when we did it, so there were 7 of us total and we managed to beat the mini-Crota in under 2mins! And only 2 of 7 people were actually 300+ the rest of us were 280+
Either way, decent communication and co-ordination is the key to success in CoO, so if there are other people there, try to get you all into a party together as well.
Although the wording sounds like it, you don't actually need to be the summoner, which is good, as getting an Antiquated Rune can be annoying. If you're playing in a fireteam then you're obviously upping the chances of getting one. But at the end of the day, the summoner can be anyone so even if you're just at CoO with random people, anyone can start it, you just need to take part in a successful event. This is true of all tiers but getting Reciprocal and Stolen Runes shouldn't be a problem anyway.
Ways to get Antiquated Runes: As far as we know, they are only random drops in successful Tier 2 CoO events, Nightfall Strikes, The King's Fall raid and also as random rewards for levelling up your Crota's Bane rep. Running Tier 2 CoO is going to give the highest drop rate though as they are only 3 minute events but you will probably end up doing quite a lot of them before getting an Antiquated Rune, unless the RNGesus blesses you!
Note they will only drop as a reward in Tier 2 CoO if you ARE the summoner of the event.Side Notes
1) If you have triggered this you won't see any marker telling you that you have a quest available, not in your galaxy map thing or anywhere. Even if you're in The Tower, standing right in front of Eris, she won't have a quest icon over her head but when you speak to her the Accept/Decline Quest box pops up.
So this may sound stupid but check with Eris that you don't already have it!
2) As with other Destiny achievements, if it doesn't pop when you turn in the quest, do the sign in/out trick:
While on the character that should have unlocked it, go into your menus, then
Settings > Log Out > Switch Profile
Pick your gamertag to sign back in, then pick the same character and it should pop when you get into orbit.Good Luck
Anyway, this should get Eris to give you the quest, please comment if it does not work so I can update the solution. Thanks.
Good luck Guardian, see you on the Dreadnaught!