Guide To Fighting Zakum

[Straight]

Priests:
You're main objective is to minimize the pot usage of your party members by quickly using heal and dispel throughout the run. If you are the only priest in your party, then your party should be assembled so that you only have to concentrate on one area. If your party leader permits it, try to keep your dragon summoned at all times, too. Sometimes leaders think this adds to lag...
Maxed Dispel
Maxed Heal
Maxed Magic Guard
Maxed Holy Symbol
Maxed Invincible
Maxed Bless
Optional: Any level of Summon Dragon

Dragon Knights:
Keep Hyper Body casted on all of your party members at all times; when you're rebuffing HB for yourself, do it a couple times and make sure it reached everyone in your party, especially if you have buyers (low levels that actually need it) in your party. Other than that, try to do as much damage as possible. During the body, DKs are the best class to help clear all the mobs of summons, so when you see a lot of summons, help kill them.
Maxed Hyper Body
Maxed crusher/Dragon Fury
Maxed Spear/Polearm Booster
Maxed blood

Chief Bandits:
Help speed up killing Zakum by dropping mesos for 2 minutes at a time and then using Meso Explosion. You should cast Meso Guard, Dark Sight followed by dropping mesos for about 2 minutes before you explode them. This is why you need high level Meso Guard/Dark Sight because if you get stunned and your skills wear off, you are dead. Chief Bandits rely on their Priests to heal them 100% of the time; however, if you see that all the Priests in your party are stunned, then walk off the body, get out of Dark Sight and use potion by yourself until they are ready again.
Maxed Meso Explosion
Maxed (high level) Meso Guard
Maxed (high level) Dark Sight
Maxed Haste

Night Lords:
Focus on the top 2 right arms of Zakum as soon as everyone starts attacking. The top right arm is probably the hardest one to kill because really only ranged attackers can reach it. Keep your party members hasted, so they can try hitting it. At the body, use avenger when you the ground summons spawn. The rest of the time, just keep throwing lucky7 at the body.

Level 110+

Maxed Lucky Seven
Maxed Shadow Partner
Maxed Avenger
Maxed Haste
Maxed Claw Booster
Maxed Drain

Rangers:
Focus on the top 2 right arms of zakum attacking with strafe. The top right arm is probably the hardest one to kill because really only ranged attackers can reach it. At the body, use arrow rain when there are lots of summons around. The rest of the time, just keep using strafe on the body.

Maxed Strafe
Maxed Arrow Rain
Bow Booster

Snipers:
Focus on the top 2 right arms of Zakum attacking with strafe. The top right arm is probably the hardest one to kill because really only ranged attackers can reach it. At the body, use ice shot whenever summons spawn to freeze them before they can reach the players. The rest of the time, just keep using strafe on the body.

Level 110+

Maxed Strafe
High level ice shot (Most people recommend to leave it as 21, up to you)
Crossbow Booster

Ice Mages:
Focus on the top 2 right arms of zakum attacking with composition. At the body, stand on the first platform and spam ice strike to freeze the summons before they reach the players. When the ice summons start spawning, use thunderbolt to help lure the summons down at a steady rate so that the other classes can help kill them.

Max Ice Strike
Max Magic Composition/Thunder Spear
Max Thunderbolt
Magic Booster

Fire Mages:
Focus on the top 2 right arms of Zakum attacking with composition. When the ice summons start spawning, use explosion to help kill those. Recommended you don't cast poison mist as it confuses people with Zakum's poison mist attack...

Max Explosion
Max composition
Max booster
Max Element Amplification

Crusaders:
Keep rage casted on all hermits, rangers, and snipers in your party. Attack as many arms as you can and then just concentrate on the body.

Max Rage
Max Power Strike
Max Panic (Sword)
Max Coma
Max Sword Booster


White Knights:
Attack as many arms as you can and then just concentrate on the body.
Max Power Strike
Max fire/ice/lightning charges
Max charged blow
Booster

CREDITS:
Drew
Maplewiki