A powerful beast from another world. Its large horns and muscular frame defy nature. Unique strategies are required to battle it.
Behemoth can be fought alone, but this is much more difficult than fighting it as designed; it is best fought with a full party, with some hunters playing specific roles:
Instigator - Also known as a Tank, the instigator's job is to attack Behemoth's head and gain its enmity (a.k.a Aggro). The Behemoth will focus most of its attacks on the instigator and stop using most of its magical attacks such as Charybdis, making it easier for the other hunters to set up and execute their own attacks. Weapons should be chosen to allow the hunter to block powerful attacks (like the Lance or Charge Blade) or avoid them (like the Insect Glaive). Weapons that can block will obtain Behemoth's enmity more easily, but any player can gain Behemoth's enmity regardless of weapon choice.
Healer - The Healer brings healing items (and the items to combine them) and focuses on keeping the other hunters, especially the instigator, from getting knocked out. Nevertheless, hunters should bring their own healing items in case of emergencies, especially Lifepowder.
Other hunters should concentrate on breaking parts and otherwise doing as much damage to Behemoth as possible, taking the role of DPS. Attacks to the head, even when trying to break the horns, should be done sparingly as to avoid taking enmity from the instigator. It's much safer to bomb the horns while the Behemoth is asleep to break them.
Flash Pods will stop Behemoth from casting Charybdis and will reset enmity.
*Extreme Behemoth will gain complete immunity from Flash Pods after two successful flashes.
Unlike most other Monsters, Behemoth can cast spells, which the game will helpfully warn you about:
Charybdis is a whirlwind attack (similar to that caused by Kushala Daora) that is cast on a single Hunter. It remains for a long time after the initial cast.
Meteor is a Fire-based attack that drops a rock from the sky. It usually targets a Hunter when cast.
Thunder is a Thunder-element attack that targets a single hunter.
Comet is a variation of Meteor that leaves a rock behind after impact. These rocks will be necessary later in the hunt but can be destroyed. It is also the Instigator's job to keep the fight away from set Comets to avoid breaking them.
Ecliptic Meteor is a massive attack that will instantly K.O. a hunter from anywhere on the map. The only safe places are right behind a Comet between the hunter and the impact, or inside the Tent in Camp.