Heal, cure (RGC), buff(Str) is regular order.
Buff, heal, cure is the hard way.
The main tank won't get the hard way (thick skin) achievement while being main tank, so will need a different main tank for them to get achievement. Had to do this a couple times with different main tank to get it for usual main tank.
We have done this whole task in the tunnel about halfway in. AEs don't hit us.
Good luck!
Edited, Dec 25th 2023 3:52pm by tul
Edited, Dec 29th 2023 9:38am by tul