We struggled
We had a tough time of it with the confluxes, but got there in the end. We did the Oracles fine from up top, but then we couldn't get a good strategy working for the Templar. I think everyone was a bit tired by that point anyway.
We tried the Templar with 5 up top, with the relic holder down to take out the back Oracles, but it's a pain in the ass hitting an Oracle with the relic! We didn't try with two down below but someone did suggest it.
Our best attempt was having everyone down in the back right corner, ignoring the Oracles, cleansing as needed. I think this would work well with a bit more organisation - we tended to go chasing harpies, or running around to try and get a better shot on the Templar. Basically, the back right was our "home" but we were running away from it far too much.
What I'd like to try tonight is:
* Everyone at back right corner, by the pillar - nobody leaves this area!
* Ignore Oracles.
* Relic holder cleanses team as needed.
* While the Templar's shield is up, everyone can shoot harpies.
* When the relic super is ready, the holder finds line-of-sight on the Templar (as close to the pillar as possible), announces he's about to take the shield down.
* Rest of team group behind the relic holder, ensuring they've got decent line-of-sight.
* Relic holder brings down shield.
* Rest of team open fire on Templar.
* Relic holder smashes all detainment fields.
* Relic holder takes out any nearby harpies - nobody else should be shooting harpies while the Templar's shield is down.
With this approach, I don't see how anyone can really be killed. The only thing we should have to worry about is killing the Templar before he enrages so it's vitally important that everyone focus fires on him the moment his shield comes down - leave the harpies alone for the relic holder to take care of.