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Biohazard – OSRS Wiki


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Biohazard continues the storyline after the Plague City quest. The plot deepens as Elena finally gets a chance to process her plague samples. Buried under these samples lies a well-hidden secret.

Details[edit | edit source]

{“requirements”:”*Completion of [[Plague City]]”,”desc”:”This is the second part of an ongoing adventure. Help Elena discover the truth about the infamous Ardougne plague.nnSmuggle test samples across Ardougne to Elena’s old mentor.”,”difficulty”:”Novice”,”kills”:”[[Mourner]] ”(level 13)””,”name”:”Biohazard”,”start”:”Talk to [[Elena]] in her house in [[East Ardougne]]. She lives right across the road from where you started [[Plague City]].”,”length”:”Medium”,”items”:”*A [[Priest gown]] [[Priest gown (top)|top]] and [[Priest gown (bottom)|bottom]] (can be obtained during the quest for 12 [[coins]])n*[[Gas Mask]] (can be obtained for free from the cupboard in [[Edmond]] and [[Alrena]]’s house in [[East_Ardougne|East Ardougne]])n”’Recommended:”’n*Teleports to [[Falador]]/[[Draynor Village]]/[[explorer’s ring 2|cabbage patch]], [[Varrock]], and [[Ardougne]]n*A few [[Energy potion|energy]] or [[stamina potion]]s”}

Walkthrough[edit | edit source]

Confiscated[edit | edit source]

Items required: None.

Jerico’s house with pigeon cages and bird food.

To begin, talk to Elena in East Ardougne, directly west of the shortcut log. She suggests talking to her father’s friend, Jerico, who keeps communication with West Ardougne via his pigeons.

Sneaking back[edit | edit source]

Items required: Pigeon cage, bird feed, Gas Mask

Speak to Jerico, who lives in a house just south of the northern bank in Ardougne and just north of the chapel.

Grab a bird cage from behind Jerico’s house.

Walk into Jerico’s home and click on the first cupboard on the north wall. Search it and you will find the required bird feed, then head to the back of the house to grab a Pigeon cage. (you can take multiple cages.) (note: if you are planning on doing One Small Favour, grab an extra 5 pigeon cages, You must speak with Jerico before you will be allowed to get the bird feed.)

Speak to Omart, who can be found west of Ceril Carnillean‘s house in East Ardougne, just south-west of the castle. When you talk to him, he says that although he can move you over the wall, it is too risky as the watchtower guards are too close to the wall. The guards need to be distracted so that you can find an opportunity to enter the city.

Head to the small watchtower along the wall, directly north of Omart. Stand in the corner where the two spiked fences meet, click on the bird feed, then click the cage in your inventory.

Go back and talk to Omart, who will call out to his assistant, Kilron, to throw over the rope ladder. Climb over the ladder into West Ardougne (you must have the gas mask equipped otherwise you will not be able to progress any further with the storyline).

Infiltrating the Mourner HQ[edit | edit source]

Mourner HQ is due north-east of West Ardougne.

Head to the Mourners’ headquarters located in the north-eastern corner of the city. Try to enter, but you will not be allowed in due to the mourners eating their stew, you need to find a way to distract them. Go around the headquarters to the northern part, where you can see a cauldron being cooked in the backyard. Squeeze through a gap in the fence into the backyard, and pick up the rotten apple laying on the ground just to the east.

Right click on the rotten apple and use it on the stew that is brewing in the cauldron, otherwise you will eat it. Squeeze back through the fence and walk around to the front of the building, and attempt to go inside again. One of the mourners will tell you that you’re not permitted inside because several mourners are ill with food poisoning and are waiting for a doctor.

Head to nurse Sarah‘s house – the large building south-west of the West Ardougne church. Search the cupboard in the northern part of her house to obtain a medical gown. Equip the gown, and go back to the headquarters. The professional attire will easily fool the mourners into letting you into their base. For all subsequent visits to the headquarters during the quest, the gown must be worn at all times.

Go upstairs and kill a mourner. A key will automatically be placed in the player’s inventory. Use the key on the gate to get inside the caged room. Search the crates to find Elena‘s distillator.

Exit the headquarters, and head back to Kilron at the south-eastern corner of West Ardougne. He will help the player get back over into East Ardougne. Alternatively, players can head through the sewers as they are no longer blocked. Go to Elena and give her the distillator.

Getting the touch paper[edit | edit source]

Items required: Falador teleport or amulet of glory (optional), brown apron (optional) or House teleport if your house is located in Rimmington

Elena gives you 4 samples, all of which are fragile however with a recent update these samples will NOT break upon teleporting. Therefore you can make your way to Rimmington via teleportation. Teleport to your player owned house in Rimmington or Falador or Draynor Village, or the cabbage patch. Travelling in a ship will not damage the samples either. Therefore a budget option is to use the single, south-eastern dock in Ardougne and pay 30gp with Captain Barnaby to travel directly to Rimmington. Go to the Chemist in the south-western corner of Rimmington. He will then give you the touch paper needed to continue the quest. (NOTE: If you haven’t completed it already, spend 30gp to sail to Brimhaven first, then back to Ardougne for the Easy Karamja Diary)

Foresight[edit | edit source]

Items required: Liquid honey, ethenea, sulphuric broline, and the plague sample.

The chemist states that the Varrock guards are looking out for someone carrying suspicious materials. He recommends using his 3 errands runners to smuggle the items into Varrock.

Chancy the gambler, Da Vinci the artist, and Hops the drinker are located right outside the chemist’s house crowding around a fire. Talk to each of them to give them their respective vials. Make sure to give each bottle to the right person, or you will have to navigate to the Dancing Donkey Inn in Varrock, acquire more chemicals from Elena, and return to Rimmington to repeat the step over.

Give Chancy the liquid honey, Da Vinci the ethenea, and Hops the sulphuric broline. Once you have given the vials, they will tell you to meet at the Dancing Donkey Inn in Varrock.

So far, so good[edit | edit source]

Items required: 10 coins or a priest gown top and bottom, the plague sample and touch paper.

Equip a priest gown set (you can buy one from Thessalia’s Fine Clothes or Fancy dress shop owner to the north of Guidor), withdraw the plague sample and touch paper from Varrock east bank and proceed to the fenced area to the south-east.

Note: Earlier versions may have required the user to deposit the plague sample and the touch paper before teleporting to Varrock, but this action is most likely not required at this time.

The Dancing Donkey Inn's location in south-east Varrock.

The Dancing Donkey Inn’s location.

Head to the fenced-in enclosure in south-eastern Varrock. The guard will search you when you try and pass through the gate. The guard will confiscate the vials if you try and pass with them but the plague sample is safe to bring through. Go to the Dancing Donkey Inn with the plague sample and talk to Hops, Da Vinci, and Chancy to get the vials back. Having a full inventory will require you to obtain a new set from Elena. Do not pass back through the gate at this point or your vials will be confiscated on return!

If you do not bring the plague sample or papers with you, you can go to Varrock east bank and retrieve them, drop the vials at the gate, quickly run to Varrock east bank for the items, and quickly run back to pick up the vials.

Telekinetic grab no longer works to grab the contents, if you try you’re told you can’t cast this spell on that object. So make sure to have both priest gown item’s before you enter.

Secrets[edit | edit source]

Items required: The plague sample, touch paper, a priest gown.

Equip your priest gown and head to Guidor‘s house in the south-eastern corner of the gated area. Talk to Guidor to give him the vials and sample, and tell him that Elena has sent a sample that needs to be processed. After analysing it, he will come to a surprising conclusion. He tells you that the plague is just a lie.

Return to Ardougne[edit | edit source]

Return to Ardougne, and talk to Elena. When you tell her that Guidor found nothing in his results, she suggests that the plague must be a hoax and that you should speak to the person on top of this – King Lathas of East Ardougne. King Lathas is located just south of Elena’s house, in his throne-room on the 1st floor[UK]2nd floor[US] of the East Ardougne Castle.

When told that the plague is in fact a hoax, the King replies that he did it for the best of his people, and that it protects them from a “far greater danger”. He then tells the player about the journey of King Tyras – the king of West Ardougne and King Lathas’s brother – towards the west and that he has been corrupted by the dark lord after drinking from the Chalice of Eternity. Hence, the wall has been erected between the cities to protect East Ardougne and in turn, all of RuneScape.

Congratulations! Quest complete!

Rewards[edit | edit source]

Biohazard reward scroll.png

Trivia[edit | edit source]

Required for completing[edit | edit source]

Completion of Biohazard is required for the following:

Navbox JSON: {“groups”:[{“type”:”subgroup”,”title”:”NPCs”,”contents”:[[],{“text”:”Elena”,”image”:”Elena chathead.png”,”link”:”Elena”},{“text”:”Jerico”,”image”:”Jerico chathead.png”,”link”:”Jerico”},{“text”:”Mourner”,”image”:”Mourner chathead.png”,”link”:”Mourner”},{“text”:”Omart”,”image”:”Omart chathead.png”,”link”:”Omart”},{“text”:”Kilron”,”image”:”Kilron chathead.png”,”link”:”Kilron”},{“text”:”Nurse Sarah”,”image”:”Nurse Sarah chathead.png”,”link”:”Nurse Sarah”},{“text”:”Chemist”,”image”:”Chemist chathead.png”,”link”:”Chemist”},{“text”:”Guidor”,”image”:”Guidor chathead.png”,”link”:”Guidor”},{“text”:”Julie”,”image”:”Julie chathead.png”,”link”:”Julie”},{“text”:”King Lathas”,”image”:”King Lathas chathead.png”,”link”:”King Lathas”},{“text”:”Guard”,”image”:”Guard (East Varrock) chathead.png”,”link”:”Guard (East Varrock)”},{“text”:”Da Vinci”,”image”:”Da Vinci chathead.png”,”link”:”Da Vinci”},{“text”:”Hops”,”image”:”Hops (Biohazard) chathead.png”,”link”:”Hops (Biohazard)”},{“text”:”Chancy”,”image”:”Chancy chathead.png”,”link”:”Chancy”}]},{“type”:”subgroup”,”title”:”Items”,”contents”:[[],{“text”:”Bird feed”,”image”:”Bird feed.png”,”link”:”Bird feed”},{“text”:”Pigeon cage”,”image”:”Pigeon cage.png”,”link”:”Pigeon cage”},{“text”:”Rotten apple”,”image”:”Rotten apple.png”,”link”:”Rotten apple”},{“text”:”Medical gown”,”image”:”Medical gown.png”,”link”:”Medical gown”},{“text”:”Key”,”image”:”Key (Biohazard).png”,”link”:”Key (Biohazard)”},{“text”:”Distillator”,”image”:”Distillator.png”,”link”:”Distillator”},{“text”:”Plague sample”,”image”:”Plague sample.png”,”link”:”Plague sample”},{“text”:”Touch paper”,”image”:”Touch paper.png”,”link”:”Touch paper”},{“text”:”Top”,”image”:”Priest gown (top).png”,”link”:”Priest gown (top)”},{“text”:”Bottom”,”image”:”Priest gown (bottom).png”,”link”:”Priest gown (bottom)”},{“text”:”Liquid honey”,”image”:”Liquid honey.png”,”link”:”Liquid honey”},{“text”:”Sulphuric broline”,”image”:”Sulphuric broline.png”,”link”:”Sulphuric broline”},{“text”:”Ethenea”,”image”:”Ethenea.png”,”link”:”Ethenea”}]},{“title”:”Locations”,”contents”:[{“text”:”West Ardougne”,”link”:”West Ardougne”},{“text”:”Rimmington”,”link”:”Rimmington”},{“text”:”Dancing Donkey Inn”,”link”:”Dancing Donkey Inn”},{“text”:”Combat Training Camp”,”link”:”Combat Training Camp”}]},{“title”:”Miscellaneous”,”contents”:[{“text”:”Quick Guide”,”link”:”Biohazard/Quick guide”}]}],”name”:”Biohazard”,”title”:”[[Biohazard]]”}

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