1. As mentioned, he's blind, so all abilities he does are centered around sound.
2. Getting hit with any of Atramedes' abilities will increase your sound level. When the bar is full - ie you hit 100 sound - Atramedes will know where you are and kill you in about two seconds.
Ground Phase:
3. The first ability you'll see is Sonar Pulse - Atramedes will release 4 sound discs that start at a random point in the room and spread out from there. Touching a disc adds 7 sound to your bar and inflicts some damage.
4. His second ability is Modulation- this will look like a gigantic sound disc reverberating through the room. Modulation can not be avoided or dodged and will inflict 40000 shadow damage to your entire raid on top of adding 7 sound to everyone's sound bar.
5. His third ability is Sonic Breath - this is cast at the target that currently has the highest amount of sound. Atramedes will face his target (boss mods figure out correctly who it is and this should be called out on vent) and start a 2-second cast. At the end of the cast, he'll follow his target with flames, and anyone getting caught in the fire will take massive amounts of damage and stack up sound. The more sound Atramedes' breath target has, the faster the flames will follow him.
Air Phase:
6. This one only lasts 40 seconds. As soon as Atramedes hits the air, he'll once again target the player with the highest amount of sound and this time he'll chase him down with flame breath from the air. Everyone should be moving when the air phase hits to increase the chances of getting away from this flame breath.
7. You will eventually want to interrupt this by using a gong, which will cause Vertigo to Atramedes. After Vertigo is done, he'll shatter the gong and go on to chase the player that used it.
7.1 You will eventually want to interrupt this by using a gong ,You want someone with a huge movement speed increase to be the person to hit the gong during the airphase, like a rogue for instance. This should be the perfect time to use the gong. Initially there are 10(TEN) gongs in the room
8. The flames will leave flame patches on the ground that deal damage and increase sound when touched, so try to not kite them into the most idiotic direction you can think of.
9. He'll also use Roaring Flames during his air phase, which adds more flame patches on the ground in random locations.
10. His last air phase ability is Sonar Pulse, which looks like the discs from the ground phase, but these ones will spawn in the location of random raid members, and shortly after they appear, a little missile will hit the center of the disc. Getting hit by the missile will deal damage and add 7 sound, so it's important that every raid member stays moving during the air phase
11. Once the 40 seconds are up, Atramedes will land again and phase 1 starts over. This cycle repeats until Atramedes' health pool is depleted.
12. Other than that, this fight is all about dodging stuff and kiting fire.
