Again with this old topic,
we all know the best thing of the game is, there is not a "wrong" job, or "wrong" Grand Company in your game choices, so...

can someone explain me why the mission in topic is almost near to impossible to do if you try it with the "wrong" job and perhaps, the "wrong" party composition?

Do I have to setup the right job, right components, and right mastery to be able to accomplish it? Is this sorta savage mission?

Don't want everything throw at me of course, I did learn engage/disengage management and everything, but no way if YOU are a dps (the wrong dps maybe ). Or I need much more luck who knows, it can be an hidden stat!

My tought is, when I disengage there is no reason the healer stops healing. After almost an hour and at third try my tank died after 20s, it was hilarious and I gave up.