Judging from MMO champ the whole fight is simply ranged dps and avodiance of damage, or so i thought from the following:
Spell Description
Gormok Abilities
Staggering Stomp
Deals a staggering stomp that inflicts 9263 to 9737 Physical damage to all enemies within 15 yards and interrupts spellcasting for 8 seconds.
50000 yd range, 0.5 sec cast
Impale
Inflicts 150% of weapon damage to an enemy and causes it to bleed for 3500 to 4500 damage per application every 2 sec. for 30 sec.
10 yd range, Instant
Acidmaw Abilities
Paralytic Bite
Inflicts 12950 to 15050 Nature damage on an enemy and injects them with a paralytic toxin.
5 yd range, Instant
Paralytic Spray
Sprays acid at an enemy and nearby targets, dealing 8325 to 9675 Nature damage and applying a debilitating paralytic toxin.
100 yd range, 1.1 sec cast
Acidic Spew
Deals 2775 to 3225 Nature damage per 0.25 sec. to enemies in front of the caster.
100 yd range, Instant
Slime Pool
Inflicts 5088 to 5912 Nature damage to enemy targets within the Poison Cloud.
Instant
Dreadscale Abilities
Burning Bite
Inflicts 11100 to 12900 Fire damage to an enemy and coats them with burning bile.
5 yd range, Instant
Burning Spray
Sprays fluid at an enemy and nearby targets, dealing 8325 to 9675 Fire damage and coating them with burning bile.
100 yd range, 1.1 sec cast
Fire Spit
Deals 9250 to 10750 Fire damage to an enemy.
100 yd range, 1.1 sec cast
Molten Spew
Deals 3700 to 4300 Fire damage per 0.25 sec. to enemies in front of the caster.
100 yd range, Instant
Icehowl Abilities
Ferocious Butt
Delivers a ferocious headbutt to an enemy, inflicting 69375 to 80625 Physical damage and stunning for 3 sec.
8 yd range, Instant
Arctic Breath
An icy breath that freezes targets in a cone in front of the caster, inflicting 20000 Frost damage over 5 sec.
100 yd range, Channeled
Massive Crash
Leaps into the air and crashes down with massive force, dealing 11000 Physical damage to all enemies, stunning them, and knocking them back.
1 sec cast
Whirl
Whirls around, dealing 9250 to 10750 Physical damage to all nearby enemies and knocking them back.
15 yd range, Instant
Frothing Rage
Increases Physical damage and attack speed by 50%.
Instant