Alchemical Hydra

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This article is about the boss variant of hydras. For the normal Slayer monster, see Hydra.
Five headsFour headsThree headsTwo heads

The Alchemical Hydra is a boss found in the Karuulm Slayer Dungeon, requiring level 95 Slayer to kill. The use of the boots of stone, boots of brimstone or granite boots are required to negate the burn damage within the Karuulm Slayer Dungeon. Upon completing the Elite Kourend & Kebos Diary, the player does not need the boots to negate the burn. It can be killed as part of a hydra slayer task, which are only assigned by Konar. Unlike the regular variant, the Alchemical Hydra cannot be killed without a slayer task.

The Alchemical Hydra was the creation of an unnamed dragonkin. While the Dragonkin saw promise in his creation, he nevertheless saw it as a failure because he could not replicate its traits, and abandoned it along with his other creations; the Wyrms, Drakes and Hydras.

The Alchemical Hydra's lair is located in an instanced area with no limits to how many players can fight it on a world, unlike the Grotesque Guardians which are limited to eight instances per world. If the player dies battling the Alchemical Hydra, they can pay a 100,000 coin fee to reclaim their items from Orrvor quo Maten. If the player dies elsewhere before reclaiming their items from there, their unclaimed items will be permanently lost. In addition to this, Orrvor's storage capabilities do not stack with others (e.g Zulrah, Grotesque Guardians), so if players have items being held by one of these fights and dies to the Alchemical Hydra, the items there will be lost.

Along with all the unique drops obtainable from hydras, it can also drop hydra leather, which is used on the machinery south-west of the pool in the Lithkren Vault to create ferocious gloves. In addition, it can also drop the hydra claw, which is combined with a Zamorakian hasta to create the dragon hunter lance.

Fight overview[edit | edit source]

Alchemical Hydra has four phases throughout the fight, depending on its remaining health. It attacks with Ranged and Magic, alternating between them every three attacks for the first three phases. At the start of each phase, it has a 75% damage reduction, which can be removed if it is lured over a vent on the floor which spews chemical liquid. However, the vent must be the correct one, corresponding to the combat triangle (e.g. when it is green, red will weaken it), otherwise the Hydra's damage is increased by up to 50%.

When the Alchemical Hydra reaches 75%, 50% or 25% of its health, it will lose one of its heads and changes phase. The damage reduction is reapplied, and so it should be lured over the next vent. It also has special attacks for each phase: poison pools when green and black, electricity when blue and fire when red. These special attacks can be avoided, but they can be devastating if dealt with carelessly.

When the Hydra is killed, it will respawn in approximately 20 seconds.

Drops[edit | edit source]

In addition to the 100% drop, the player will also have two rolls on the Alchemical Hydra's drop table. The first drop has a chance to be a unique, while the second is always standard. The drop rates in the drop table below reflect the effective chance of getting an item. For example, a drop rate of 2/100 indicates that you have two 1/100 chances of receiving the drop.[1]

Drops remain on the ground for 30 minutes, or until the player leaves the instanced area.

Estimated unique and pet drop rates are based off 55,115 kills.[2] Other estimated drop rates are based off 10,518 kills.[3]

100%[edit | edit source]

Item Quantity Rarity GE market price
Hydra bones.png Hydra bones 2 Always 9,584

Unique[edit | edit source]

Item Quantity Rarity GE market price
Hydra's eye.png Hydra's eye 1 Rare (~1/200)[a 1] Not sold
Hydra's fang.png Hydra's fang 1 Rare (~1/200)[a 1] Not sold
Hydra's heart.png Hydra's heart 1 Rare (~1/200)[a 1] Not sold
Hydra tail.png Hydra tail 1 Rare (~1/500) 2,167,602
Hydra leather.png Hydra leather 1 Rare (~1/500) 1,628,899
Hydra's claw.png Hydra's claw 1 Very rare (~1/1,000) 1,624,801
Dragon knife.png Dragon knife 500–1,000 Very rare (~1/2,000) 941,000–1,882,000
Dragon thrownaxe.png Dragon thrownaxe 500–1,000 Very rare (~1/2,000) 431,000–862,000
  1. 1.0 1.1 1.2 The chance of hitting the Brimstone ring piece table is ~1/200. The order players receive the items in are: Hydra's eye, Hydra's fang and finally Hydra's heart. This order repeats itself. It takes ~600 kills to complete a Brimstone ring.

Weapons and armour[edit | edit source]

Item Quantity Rarity GE market price
Mystic fire staff.png Mystic fire staff 1 Common (~16/100)[b 1] 25,119
Mystic water staff.png Mystic water staff 1 Common (~16/100)[b 1] 25,152
Battlestaff.png Battlestaff 8–12 (noted) Common (~10/100) 65,136–97,704
Black d'hide body.png Black d'hide body 1 Common (~10/100) 7,581
Dragon longsword.png Dragon longsword 1 Common (~6/100) 59,416
Dragon med helm.png Dragon med helm 1 Common (~6/100) 59,119
Rune platebody.png Rune platebody 1 Common (~6/100)[b 2] 38,590
Dragon battleaxe.png Dragon battleaxe 1 Common (~4/100) 119,370
Rune platelegs.png Rune platelegs 1 Uncommon (~3/100)[b 2] 37,929
Rune plateskirt.png Rune plateskirt 1 Uncommon (~3/100)[b 2] 37,975
Mystic robe top (light).png Mystic robe top (light) 1 Uncommon (~2/100)[b 3] 71,344
Mystic robe bottom (light).png Mystic robe bottom (light) 1 Uncommon (~2/100)[b 3] 47,420
  1. 1.0 1.1 Players will receive Mystic fire staff together with Mystic water staff
  2. 2.0 2.1 2.2 Players will receive Rune platebody together with Rune platelegs or Rune plateskirt
  3. 3.0 3.1 Players will receive Mystic robe top (light) together with Mystic robe bottom (light)

Runes and ammunition[edit | edit source]

Item Quantity Rarity GE market price
Chaos rune.png Chaos rune 150–300 Common (~12/100) 15,150–30,300
Death rune.png Death rune 150–300 Common (~12/100) 37,800–75,600
Blood rune.png Blood rune 150–300 Common (~12/100) 42,150–84,300
Astral rune.png Astral rune 150–300 Common (~12/100) 21,150–42,300
Dragonstone bolts (e) 5.png Dragonstone bolts (e) 100–120 Common (~4/100) 39,100–46,920
Onyx bolts (e) 5.png Onyx bolts (e) 35–50 Uncommon (~2/100) 305,165–435,950

Herbs[edit | edit source]

There is approximately a 20/100 chance of receiving a herb drop.

Item Quantity Rarity GE market price
Grimy ranarr weed.png Grimy ranarr weed 10–15 (noted) Uncommon (~1/40) 78,540–117,810
Grimy avantoe.png Grimy avantoe 10–15 (noted) Uncommon (~1/40) 16,600–24,900
Grimy snapdragon.png Grimy snapdragon 10–15 (noted) Uncommon (~1/40) 83,000–124,500
Grimy torstol.png Grimy torstol 10–15 (noted) Uncommon (~1/40) 91,700–137,550
Grimy kwuarm.png Grimy kwuarm 25–30 (noted) Uncommon (~1/40) 31,225–37,470
Grimy cadantine.png Grimy cadantine 25–30 (noted) Uncommon (~1/40) 35,500–42,600
Grimy lantadyme.png Grimy lantadyme 25–30 (noted) Uncommon (~1/40) 30,400–36,480
Grimy dwarf weed.png Grimy dwarf weed 25–30 (noted) Uncommon (~1/40) 19,150–22,980

Seeds[edit | edit source]

There is approximately a 4/100 chance of receiving a seed drop.

Item Quantity Rarity GE market price
Torstol seed 5.png Torstol seed 2–3 Rare (~1/240) 146,758–220,137
Ranarr seed 5.png Ranarr seed 2–3 Rare (~1/240) 104,062–156,093
Snapdragon seed 5.png Snapdragon seed 2–3 Rare (~1/240) 118,156–177,234
Willow seed 5.png Willow seed 2–3 Rare (~1/266.67) 10,344–15,516
Watermelon seed 5.png Watermelon seed 30–45 Rare (~1/320) 8,040–12,060
Maple seed 5.png Maple seed 2–3 Rare (~1/320) 83,408–125,112
Yew seed 5.png Yew seed 2–3 Rare (~1/320) 206,480–309,720
Teak seed 5.png Teak seed 2–3 Rare (~1/320) 564–846
Mahogany seed 5.png Mahogany seed 2–3 Rare (~1/320) 13,538–20,307
Papaya tree seed 5.png Papaya tree seed 2–3 Rare (~1/400) 19,318–28,977
Palm tree seed 5.png Palm tree seed 2–3 Rare (~1/533.33) 102,398–153,597
Magic seed 5.png Magic seed 2–3 Rare (~1/640) 372,738–559,107
Spirit seed 5.png Spirit seed 2–3 Very rare (~1/1,066.67) Not sold
Celastrus seed 5.png Celastrus seed 2–3 Very rare (~1/1,600) 114,034–171,051
Dragonfruit tree seed 5.png Dragonfruit tree seed 2–3 Very rare (~1/3,200) 146,610–219,915
Redwood tree seed 5.png Redwood tree seed 2–3 Very rare (~1/3,200) 162,898–244,347

Other[edit | edit source]

Item Quantity Rarity GE market price
Coins 10000.png Coins 40,000–60,000 Common (~18/100) Not sold
Shark.png Shark 2–4 Common (~14/100) 1,712–3,424
Ranging potion(3).png Ranging potion(3) 1 Common (~14/100)[c 1] 1,373
Super restore(3).png Super restore(3) 2 Common (~14/100)[c 1] 15,356
Dragon bones.png Dragon bones 30 (noted) Common (~12/100) 71,040
Rare drop table.png Rare drop table 1–2 Common (~4/100) Not sold
Crystal key.png Crystal key 1 Uncommon (~2/100) 22,683
  1. 1.0 1.1 Players will receive Ranging potion(3) together with two Super restore(3)

Tertiary drops[edit | edit source]

Item Quantity Rarity GE market price
Clue scroll (hard).png Clue scroll (hard) 1 Rare Not sold
Clue scroll (elite).png Clue scroll (elite) 1 Rare Not sold
Ikkle hydra.png Ikkle hydra 1 Very rare (~1/3,000) Not sold

Rare drop table

In addition to the drops above, this monster approximately has a 4/100 chance to access the standard rare drop table.

Show/hide rare drop table
Item Quantity Rarity GE market price
Coins 1000.png Coins 3,000 Rare (1/145.45) Not sold
Loop half of key.png Loop half of key 1 Rare (1/158.76; 1/158.35)[R 1] 8,589
Tooth half of key.png Tooth half of key 1 Rare (1/167.05; 1/166.59)[R 1] 13,381
Uncut sapphire.png Uncut sapphire 1 Rare (1/640; 1/480)[R 1] 858
Runite bar.png Runite bar 1 Rare (1/640) 12,436
Rare drop table talisman.png Unknown talisman
(please specify)
1 Rare (1/922.52; 1/882.76)[R 1] Error
Nature rune.png Nature rune 67 Very rare (1/1,066.67) 16,951
Rune 2h sword.png Rune 2h sword 1 Very rare (1/1,066.67) 37,961
Rune battleaxe.png Rune battleaxe 1 Very rare (1/1,066.67) 24,574
Uncut emerald.png Uncut emerald 1 Very rare (1/1,280; 1/960)[R 1] 908
Law rune.png Law rune 45 Very rare (1/1,600) 12,690
Death rune.png Death rune 45 Very rare (1/1,600) 11,340
Steel arrow 5.png Steel arrow 150 Very rare (1/1,600) 4,950
Rune arrow 5.png Rune arrow 42 Very rare (1/1,600) 2,646
Adamant javelin.png Adamant javelin 20 Very rare (1/1,600) 820
Rune sq shield.png Rune sq shield 1 Very rare (1/1,600) 22,662
Dragonstone.png Dragonstone 1 Very rare (1/1,600) 12,072
Silver ore.png Silver ore 100 (noted) Very rare (1/1,600) 7,900
Uncut ruby.png Uncut ruby 1 Very rare (1/2,560; 1/1,920)[R 1] 1,495
Rune kiteshield.png Rune kiteshield 1 Very rare (1/3,200) 32,206
Dragon med helm.png Dragon med helm 1 Very rare (1/3,200) 59,119
Rune spear.png Rune spear 1 Very rare (1/3,378.14; 1/3,366.58)[R 1] 12,094
Shield left half.png Shield left half 1 Very rare (1/6,756.29; 1/6,733.15)[R 1] 65,497
Dragon spear.png Dragon spear 1 Very rare (1/9,008.38; 1/8,977.53)[R 1] 37,409
Uncut diamond.png Uncut diamond 1 Very rare (1/10,240; 1/7,680)[R 1] 2,977
Rune javelin.png Rune javelin 5 Very rare (1/20,480; 1/15,360)[R 1] 755
  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 The drop rate is increased when wearing a Ring of wealth.

Konar's drop table[edit | edit source]

If killed on a Slayer assignment by Konar quo Maten, this monster has a 1 in 50[k 1] chance to access an extra loot table. This averages to an additional 1,817.54 worth of items per kill while on task.

Show/hide Konar's drop table
Item Quantity Rarity GE market price
Uncut diamond.png Uncut diamond 25–35 (noted) Rare (1/620) 74,425–104,195
Uncut ruby.png Uncut ruby 25–35 (noted) Rare (1/620) 37,375–52,325
Coal.png Coal 300–500 (noted) Rare (1/620) 68,700–114,500
Coins 10000.png Coins 50,000–150,000 Rare (1/620) Not sold
Gold ore.png Gold ore 100–200 (noted) Rare (1/775) 34,700–69,400
Adamant bolts(unf) 5.png Adamant bolts(unf) 200–300 Rare (1/775) 39,800–59,700
Runite bolts (unf) 5.png Runite bolts (unf) 200–300 Rare (1/775) 58,200–87,300
Dragon arrowtips.png Dragon arrowtips 50–200 Rare (1/775) 69,400–277,600
Iron ore.png Iron ore 350–500 (noted) Very rare (1/1,033) 51,450–73,500
Rune full helm.png Rune full helm 1–2 (noted) Very rare (1/1,033) 20,719–41,438
Rune platelegs.png Rune platelegs 1–2 (noted) Very rare (1/1,033) 37,929–75,858
Rune platebody.png Rune platebody 1–2 (noted) Very rare (1/1,033) 38,590–77,180
Lobster.png Fish (scales to Fishing icon.png level) Varies Very rare (1/1,033) Not sold
Runite ore.png Runite ore 10–15 (noted) Very rare (1/1,550) 110,360–165,540
Palm tree seed 5.png Palm tree seed 1–4 Very rare (1/3,100) 51,199–204,796
Magic seed 5.png Magic seed 1–4 Very rare (1/3,100) 186,369–745,476
Celastrus seed 5.png Celastrus seed 1–4 Very rare (1/3,100) 57,017–228,068
Dragonfruit tree seed 5.png Dragonfruit tree seed 1–4 Very rare (1/3,100) 73,305–293,220
Redwood tree seed 5.png Redwood tree seed 1 Very rare (1/3,100) 81,449
Torstol seed 5.png Torstol seed 1–4 Very rare (1/3,100) 73,379–293,516
Snapdragon seed 5.png Snapdragon seed 1–4 Very rare (1/3,100) 59,078–236,312
Ranarr seed 5.png Ranarr seed 1–4 Very rare (1/3,100) 52,031–208,124
Pure essence.png Pure essence 3,000–5,000 (noted) Very rare (1/3,100) 12,000–20,000
Broken dragon hasta.png Broken dragon hasta 1 Very rare (1/10,000) 180,123
Mystic robe top (dusk).png Mystic robe top (dusk) 1 Very rare (1/50,000) 141,260
Mystic robe bottom (dusk).png Mystic robe bottom (dusk) 1 Very rare (1/50,000) 77,522
Mystic gloves (dusk).png Mystic gloves (dusk) 1 Very rare (1/50,000) 16,473
Mystic boots (dusk).png Mystic boots (dusk) 1 Very rare (1/50,000) 17,118
Mystic hat (dusk).png Mystic hat (dusk) 1 Very rare (1/50,000) 28,130
  1. Jagex. Mod Kieren's Twitter account. 16 January 2019.

Gallery[edit | edit source]

Changes[edit | edit source]

Date Changes
14 January 2019 (update) Hotfix The Alchemical Hydra gained access to Konar's drop table.[4]

References[edit | edit source]

  1. Jagex. Mod Ash's Twitter account. 13 January 2019. Mod Ash: "The first roll will go to the unique table OR to the standard table. The second roll will always go to the standard table. And you only get one pet roll in either situation."
  2. Sample of 55,115 kills
  3. Alchemical Hydra drop log
  4. Jagex. Old School RuneScape's Twitter account. 14 January 2019.