At 100 energy Zaen aims Murder in a Row at every player in his line of sight, and anyone not hidden behind a Forbidden Freight crate takes a near-lethal shot plus a long bleed. Keys die to barrel management: Fire Bombs and stray shots blow up crates 5 seconds after they are hit, and every fel barrel left alive stacks the party-wide Fel-Infused Freight rot until the healer drowns.
At 100 energy Zaen takes aim and then shoots every player in his line of sight, dealing heavy Physical damage plus an additional Bleed over 15 seconds.
Everyone breaks line of sight behind a Forbidden Freight crate before the cast finishes; if someone gets clipped, remove the bleed and stabilize them fast.
Warehouse workers hurl Forbidden Freight crates at players, dealing Fire damage on impact and knocking them away; the landed crates become your cover.
Dodge the falling crates, then note where they land, because those crates are the only line-of-sight blockers for Murder in a Row.
Zaen sticks a ticking bomb on a player that explodes after 6 seconds, damaging everyone within 6 yards and destroying any Forbidden Freight caught in the blast.
Spread away from the group, and use the first set of bombs deliberately to detonate the fel barrels while saving one clean crate for cover.
Each volatile fel barrel still standing pulses Fire damage into the entire party every 3 seconds, and multiple barrels stack the rot.
Walk Fire Bombs into the fel barrels early so the pulsing stops; never let more than one stack linger into Killing Spree.
Zaen unleashes a rapid barrage of gunfire that hits the whole party every half second for 3 seconds and ignores armor.
Group defensives and a healing cooldown flatten this; call it as the biggest scripted heal check of the fight.
Zaen drives a poisoned blade into his current target for very heavy Physical damage and applies Heartstop Poison.
Tank uses active mitigation for the hit itself and calls for the dispel on the follow-up poison.
A lethal poison that reduces the tank's maximum health by 30 percent and deals massive Nature damage over 15 seconds.
Healer dispels this poison on the first tick; a tank sitting at 70 percent maximum health into the next Envenom is how tanks die.
Use active mitigation for every Envenom and expect to be at reduced maximum health until Heartstop Poison is dispelled.
Dispel Heartstop Poison immediately, then keep the party topped through Killing Spree and any active Fel-Infused Freight pulses.
Carry your Fire Bomb away from the group and onto a fel barrel, never onto the crate the party is saving for cover.
Pre-position behind a Forbidden Freight crate as Zaen approaches full energy, and leave any crate that just got hit, because it detonates after 5 seconds.
Tyrannical: A Murder in a Row clip is effectively a one-shot, and the Envenom into Heartstop Poison combination can kill the tank through the 30 percent maximum health cut, so pre-plan tank externals and dispel the poison on its first tick.
Sources: Wowhead - Murder Row Dungeon Overview (Patch 12.1) · Warcraft Wiki - Murder Row (instance) · Icy Veins - Murder Row Dungeon Guide
