Doomfire, Fear & Air Burst
Archimonde is primarily a survival and personal-responsibility fight. Avoid Doomfire, use Tears of the Goddess correctly for Air Burst, and coordinate Fear protection/breaks. Player deaths are especially punishing because Soul Charge can snowball the encounter.
Assign the encounter’s repeatable jobs before the pull. During progression, clean mechanic execution is worth more than marginal damage gained by ignoring movement or assignments.