So can someone list the mechanic of each bosses and how to encounter this? Rather not deal with a bunch of "deaths" and wipes and making a 30 mnts dungeon becoming 60-90 mnts long slog. Appreciate the tips in advance, and if you could be more specific.

As far as I know - Satasha Boss 1, he put debuff on 2-3 party members and sometimes 1-2 debuffs which is not that fast to remove before he hit them and kill any party member with it instantly. We are not talking you have very low hp and can recover, it's instant death. Removing one debuff on 2 party members is doable, more than that, one of them is going to die. This is a rather cheap stupid move from SE.

Satasha Boss 2, can anyone figure out the strategy? How to avoid being shackled - and pretty much zerged to death by adds? You cannot get rid of this status by esuna or anything. I had to keep on curing, regen and stoneskin myself just to be able to stay alive.

Satasha Boss 3, what's the deal with tentacle and arms? Which one that has to be killed first? they keep respawning and it's a total nightmare to heal when you party members are all over the place and AOE heals don't even reach them. Melee DPS are having a hard time getting near the boss.