This is now not possible at all after the update.
I am wearing the gear provided from the prior quests and an synced to the max level but I can't do it.
Because my summon can't get agro they both attack me and I can't heal fast enough to not immediately die.
Also they both heal themselves so I can't deal enough damage to make any difference to their HP so I eventually runout of MP despite using my CD's.
I am open to suggestions about how to do this but I can't survive for more than 30 seconds.