Qutrub take triple damage from melee attacks, and double damage from magical ones, in return they have double the HP of other mobs their level.

Spinal Cleave is only used when the Qutrub's first weapon, a sword, is broken, and is it's second weapon, a dagger sheathed on it's back is not. If the second weapon is broken the Qutrub cannot use Spinal Cleave.

All of the Qutrub damage TP moves can hurt, but a high level tank should have no problems with them.

A Duo, Trio, or Party of higher level help is recommended for this spell, A Blue Mage, with a Tank, and Healer will have no problems. A 75 blink tank DD and a Blue Mage can duo the spell. In this case it's recommended that the Blue Mage have a White Mage subjob to support the Tank fully. A Beastmaster can solo the spell also. Solo as Blue Mage is possible with risk at Blue Mage level 75.

No special medicines are needed for the fight, but a way to sneak and invisible are mandatory for reaching camp. Having Chaotic Eye equipped is very helpful. A Warp item to save a dangerous walk home is a must.

To learn the spell you must break the Qutrub's right hand weapon, a sword. This is done by attacking from the monsters right side, and dealing critical damage. Blue Physical Magic, many weapon skills, and normal attacks that crit can all do the job. A Monk with merits in Critical Hit Percent is very useful here.

Once you zone into Arrapago Reef, head to the camp near the exit of a cave towards the west side of G-9. The walk is dangerous, and you will face, sight, sound, Low-HP, and true-sight aggro on the way, so take proper care. There are several imps in the caves in the H-9 area, which is the most difficult part of the trip. Once past the imps, you will be at camp, a hill rising to the caves exit, this is a safe place to pull Qutrub to with no aggro worries. Your targets are in the open area, noted with a red circle, to the west. There are several Quatrub in easy range. The Qutrub will aggro via sight and sound, and can link, so be careful. Pull them to your camp, and proceed to try and break the main hand sword. Take care to not break the second weapon. The Qutrub here have two job types, BLM and DRK. Silencing both is very helpful. Respawn is fast enough that you should never want for a target.

Warning! A death in this camp can cause the NM Lamia #19 to spawn on the dead party member. Needless to say, this will end anything less then a very full, and skilled party.

There is a slightly safer camp a slight walk farther past the location of camp #1, where the risk of spawning the NM Lamia #19 is almost zero. You can reach this camp by following the instructions for camp #1 and just continuing on to the entrance of the ship marked above, where one Merrow spawns. By taking care, you can avoid blood aggro from the Skeletons located to the North and the Merrow should not trouble you. This is a this is a safe place to pull the three Qutrub from the South to with no aggro worries. Your targets are in the open area, noted with a red circle. There are three Quatrub in easy range, with a fast respawn. The Qutrub will aggro via sight and sound, and can link, so be careful. Pull them to your camp, and proceed to try and break the main hand sword. Take care to not break the second weapon. The Qutrub here have two job types, BLM and DRK. Silencing both is very helpful.

You can also reach this camp via the North path out of the Ilrusi Staging point, but you'll need to deal with some Imps around E/F-5. You can also get here via the path that starts at the 'A' on this map, but to get there, you will need to pass several Soulflayers on the previous map. If you choose this path take great care!

There are high level Qutrub in the Mire. You will need a solid merit or exp party to kill these effectively. They ARE easy to reach from the Dvucca Staging point, or from the Undersea Ruins, but they are NOT easy to kill. The spawns are marked with red dots on the map above.

Note that there are a lot of other undead (Fomor, Skeleton, Bhoot) in the area. Care should be taken with ones HP as they can blood aggro from a good distance.

Spinal Cleave can be learned in a Undead Swarm Besieged. You, a party, or alliance member must get the killing blow on the Qutrub for a chance to learn the spell. You do not need to have had engaged the monster yourself to learn the spell.

There are higher level Qutrub on the Reef. You will need a solid merit or exp party to kill these effectively. They can be easily reached (The only plus to the camp) with a short walk with sneak and invisible. You will need a Lamian Fang key to reach the camp. They are not recommended.

Spinal Cleave can be learned in the Chief Sergeant level Assault; Operation: Snake Eyes. This mission has Quatrub who use the spell. Your party should have no issue killing the Quatrub.