Zogre Flesh Eaters

Zogre Flesh Eaters is a Feldip Hills area quest in which you must venture into the crypts of Gu'Tanoth, an ogre resting ground, now crawling with undead zombie and skeleton ogres.

Walkthrough
Speak to Grish, located at Jiggig (south of the Castle Wars entrance).Fairy ring code: He will talk about Zogres (zombie ogres) coming from the ground and making people sick. Ask if you can help, and progress through the conversation. Grish will give you two Super restore potions and three cooked chompy birds.

Talk to the Ogre guard to the east. After mentioning Grish, he will remove the barricade to allow you inside the Zogre-infested area.

Run east to a set of stairs going downward. Take these stairs.

The cave
Note: You may now (or have already) become diseased if under 89 Combat, and a Zogre or Skogre (level 44) attacks you. From now on, make sure you carry Super restore potions with you! The disease will temporarily reduce a random skill by up to 10 levels every minute or so!
 * Proceed north-west to an area with a blackened floor. There will be a short cutscene.
 * Search the skeleton; a zombie will appear and attack. Kill it to obtain a ruined backpack.
 * Open the backpack to obtain a Dragon inn tankard, some rotten food and a knife.
 * Search the broken lectern. You will find a torn page that contained a spell.
 * Attempt to search the coffin nearest to the skeleton, and then use a knife on it. The lock should unlock. Try opening the coffin (it may take a couple of tries). When the coffin is open, search it to obtain a black prism.
 * Backtrack and exit the cave, running back to the barricade - or simply, use the Nightmare Zone minigame teleport that is located in the red mini-game section of the quest tab.
 * Note: If you became diseased in the previous part, you can enter the Nightmare Zone in practice mode and kill yourself to cure yourself. Alternatively, you can teleport to Clan Wars with a ring of dueling, get in then out of the portal, and then teleport back to Castle Wars or teleport to the Watchtower (if the quest Watchtower is done).

Yanille

 * Proceed to Yanille.
 * Go to the Dragon Inn, and use the tankard on the bartender. The bartender will explain that the tankard belonged to Brentle Vahn, a not-so-moral customer who had been seen with a shady wizard.
 * Talk to Zavistic Rarve in the Wizards' Guild. If you don't have the required level to enter the guild, ring the front bell and Rarve will appear outside. After seeing the prism and torn page, Rarve will tell you to talk to Sithik Ints in the guest house north of the guild.

Incriminating Sithik

 * Proceed to the top floor of the guest house that is directly north of the Magic Guild. Sithik is in the west bed. Talk to him, and he will deny any connection to the Zogres. When you raise allegations, Sithik will challenge you to find facts. You need to show a picture of Sithik to the bartender to see if he was the wizard seen with Brentle.
 * Search the drawers, the cupboard and the wardrobe. You will find a Book of portraiture, a Necromancy book, papyrus and charcoal, and a Book of 'h.a.m'.
 * Read all three books.
 * Use the Book of Portraiture on Sithik. He will recommend trying portraiture.
 * Draw a portrait of Sithik by using the papyrus on Sithik. There are two outcomes, he will either appreciate the "truth" or the "honesty" if he admires the "truth" you need to drop the portrait and make a new one. "honesty" is the correct portrait, you can get more papyrus from the drawers if you fail. The two portraits won't appear the same in the inventory and the correct one, when examined, will read "A classic realist charcoal portrait of Sithik."
 * Take the portrait and the tankard back to the bartender. The bartender will recognise Sithik and will sign the portrait as an affidavit.
 * Talk to Zavistic Rarve while holding the Necromancy book, the Book of 'h.a.m.', the tankard and the signed portrait. This will be enough evidence for Rarve to give you a Strange potion, which he will instruct you to use on Sithik and then leave the house.
 * Use the potion on the cup of tea on top of Sithik's dresser.
 * Go downstairs and back upstairs. Sithik will have turned into an ogre.
 * Talk to Sithik, and he will confess. Obtain answers to all three questions in order to make Relicym's balm and brutal arrows.

Making Relicym's Balm
After Sithik Ints has revealed the secret to making Relicym's balm, having it on hand in the final fight will help tremendously. It is your choice to obtain this now; however, the quest can be done without it. The balm is also tradeable.

Relicym's Balm is made like any potion, it uses Rogue's purse as herb and Snake weed as secondary ingredient.

It is HIGHLY recommended to make this and give it to Uglug Nar. This will give access to a store selling 100 Relicym's balm (3), and he will give you enough money (650gp) to buy three of them back. The store also has 100 Achey logs, 10 bow strings, 10 cooked chompy, and five knives in stock. Simply buying Relicym's balm off another player or the Grand Exchange then giving it to Uglug Nar also works, you do not have to make it yourself.

Making brutal arrows
Brutal arrows are the best way to kill Zogres, and shooting them from a composite ogre bow is the best strategy in the final fight. It is your choice to obtain them; however, the quest can be done without it.

The easiest way to obtain them will be from the Grand Exchange, as both the brutal arrows and the composite ogre bow are tradable.

To make the arrows, cut down Achey trees. After, fletch them into ogre arrow shafts (each log will give 2-6 shafts). Then, add feathers to the shafts (Each shaft needs 4 feathers). Finally, to make the brutal arrows, use nails (made of any metal) on the flighted ogre arrow, while having a hammer in your inventory. Each time you do this, six arrows are made.

Relocating the ceremonial grounds

 * Return to Grish and tell him what Sithik told you.
 * Tell him that you have some other questions for him, and you want to talk about the quest. Go through each option.
 * Grish will give you a key to obtain access to the ceremonial chamber, where you will fight the boss, so prepare yourself.
 * The boss is very simple if you use the safespot (pictured) and have around 40 range, you will barely take damage. The best way is range using brutal arrows and an ogre composite bow, however, you may also use mage. Crumble undead is particularly effective.
 * Return to the cave beyond the barricade and head west. There will be two successive locked doors, proceed through these and descend the stairs.
 * Proceed to the end of this long, wide room and search the stand.
 * A level 111 Zogre named Slash Bash will attack you. If using Ranged, use the safe spot (pictured) and range the Zogre using Protect from Ranged. If maging, cast Entangle or Snare followed by a wave attack or Crumble Undead while using Protect from Ranged, or simply use the safe spot while protecting from Ranged. Fire Blast maxes out at 4 against this boss, so make sure to bring enough casts. Alternatively, with decent armour (Rune or better), you can melee the boss down with little to no trouble. Poisoning the boss with a poisoned Dragon dagger helps. In either case, your Prayer will drain very fast, so make sure you use Super restore potions when you need them. Once the Zogre is dead, collect the bones and the artefact that he drops.
 * NOTE: It is possible to take too long to kill him, in which case he says something about growing weary of the fight and that he is awaiting a real challenge. You will have to start the fight over if this happens.
 * NOTE: The Ourg bones dropped by Slash Bash are extremely rare and give 140 Prayer XP when buried, making them valuable among players. If you choose to keep them for the XP, it is highly recommended to use them on a Gilded altar in a player-owned house providing 490 XP, or at the Ectofuntus for 560 XP.
 * Although you may think the bones would be an amazing way to get some quick cash, Slash Bash will only be able to be killed once, and therefore, you can only recieve the three-bone-drop once.
 * Return to Grish for your reward.

Reward
Bonus: Take the Black prism to either Zavistic Rarve for 2000 coins, or take it to Yanni Salika in Shilo Village for 5000 coins.
 * 1 Quest point
 * 3 Ourg bones, which reward 140 Prayer experience each
 * 2 Zogre bones, which reward 22 Prayer experience each
 * 2,000 Fletching experience
 * 2,000 Ranged experience
 * 2,000 Herblore experience
 * Ability to make Relicym's Balm
 * Ability to fletch Comp ogre bows and Brutal arrows
 * Ability to wear Inoculation bracelets

Required for completing

 * Rum Deal