Hoping to stir up some interest in trying to get some of the meta achievements done in group 1. I'll list each bosses achievement and short strat, some of these we should wait on until we can reliably down blood wing and sindragosa before attempting to avoid losing time on LK attempts.

Lord Marrowgar - Boned
- Defeat Lord Marrowgar without any raid member remaining impaled for more than 8 seconds in 10-player mode.
Maybe the easiest achievement to get, often happens on accident.

Lady Deathwhisper - Full House
- Defeat Lady Deathwhisper with at least five different types of Cultists active at the time of her demise in 10-player mode.
One of the harder ones, empowered adds do not count but you need to keep a Cult Adherent, Reanimated Adherent, Cult Fanatic, Deformed Fanatic and Reanimated Fanatic alive throughout the fight including phase 2. Should probably wait on this one.

Lootship - I'm on a Boat
- Claim victory in the Gunship Battle without any raid member visiting the enemy gunship more than twice in 10-player mode.
This should be easy enough, just make 2 teams, team 1 makes the first 2 jumps and team 2 makes the next 2, contingent on us being able to down lootship within 4 cycles. Should be done before we kill LK as gunship will probably one of our first hard modes.

Deathbringer Saurfang - I've Gone and Made a Mess
- Defeat the Deathbringer before Mark of the Fallen Champion is cast three times in 10-player mode.
Another easy one, I think having to kill him after getting a set number of marks would have been harder.

Festergut - Flu Shot Shortage
- Defeat Festergut while none of the players in your raid group ever had 3 stacks of Inoculated in 10-player mode.
Simple enough except for the damage from pungent blight, however if everyone pops a damage reduction cooldown before the blight we should be fine. First spores, players A and B run away from all others and are the only ones with the buff, second spores, players A and B run out of the spores so now everyone has 1 stack, spore 3 is normal everyone now has 2 stacks or 50% resist to blight.

Rotface - Dances With Oozes
- Defeat Rotface without a Big Ooze casting Unstable Ooze Explosion in 10-player mode.
Can be very hard depending on RNG, there are a ton of strats for this most seem to be zerg like where everyone just deals with their little oozes, another alternative is to have more than 1 player kite big oozes with 4 stacks which is probably the safer method.

Professor Putricide - Nausea, Heartburn, Indigestion...
- Defeat Professor Putricide without using Regurgitated Ooze on the Abomination in 10-player mode.
Another difficult one, easier than Rotface from what I've read though. You want to stack on the green ooze target to mitigate the damage and everyone should bring swiftness potions in case they get a gas cloud as the extra speed will help kite it.

Blood Prince Council - The Orb Whisperer
- Defeat the Blood Council without anyone in the raid taking more than 23,000 spell damage in a single hit in 10-player mode.
All on the Keleseth tank to maintain his floaty purple orbs.

Blood-Queen Lana'thel - Once Bitten, Twice Shy
- Defeat Blood-Queen Lana'thel once as a vampire and again without becoming a vampire in 10-player mode.
Easy, we just need to set up a bite 'day off' for dps, swap the tanks so they are eligible for a bite and rotate healers in there.

Valithria Dreamwalker - Portal Jockey
- Enter every portal spawned by Valithria Dreamwalker before healing her to full health in 10-player mode.
At first I thought this was a individual event but it's actually a team one, 3 people must each use a portal every wave to do this, if she reaches 100% with people still in the portals you don't get credit for the achievement. We have been having 2 healers use portals each time so we just need someone else to hop in there to activate the 3rd portal to get this one.

Sindragosa - All You Can Eat
- Defeat Sindragosa in 10-player mode without any member of your raid receiving more than 5 stacks of Mystic Buffet.
This one is made difficult by the tanks needing to reset stacks every tomb, there are strats for this but let's work on a kill first.

Lich King - Been Waiting A Long Time For This
- Allow Necrotic Plague to stack to 30 before defeating the Lich King in 10-player mode.
Not a whole lot of point in going into detail on the achievement on a fight we're not even on yet but the plan on this one is to dispel the first stack away from everything to buy yourself time, then dps the LK down to 72%ish (pre transition) and then let the plague run wild through the adds until it hits 30 stacks, I have read that if a 29 stack and a 2 stack merge and for a 31 you can miss the achievement, not sure if this has been fixed. The plague does not persist into later phases, once 30 has been reached and you make the phase 2 transition everything continues as normal.