Alchemical Hydra

This article has a strategy guide here. All information on mechanics and strategy will be on this page.

This article is about the boss variant of hydras. For the normal Slayer monster, see Hydra.

Five headsFour headsThree headsTwo heads

Alchemical Hydra
Released						10 January 2019 (Update)
Members						Yes
Combat level						426
Always drops						Hydra bones
Examine
A ferocious Alchemical Hydra!
Combat info
Hitpoints						1100
Max hit						17+17 (default) 26+26 (empowered)
Aggressive						Yes
Poison						Yes
Weakness						Stab, ranged, dragonbane weapons
Attack style						Ranged and magic
Slayer info
Slayer level						95
Slayer XP						1320
Category						Hydras
Assigned by
Combat stats
100				100				100				260				260
Aggressive stats
+0				+0				+0				+45				+45
Defensive stats
+75				+150				+150				+150				+45
Other bonuses												Immunities
+0			+0			+20			+20%			Immune				Immune
Attack speed

? (edit)17+17 (default)
26+26 (empowered)35 (default)
26+26 (empowered)35 (default)
52 (empowered)52? (edit)? (edit)Versions: 4

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

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

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.

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. Other estimated drop rates are based off 10,518 kills.

100%

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

Unique

	Item	Quantity	Rarity	GE market price
	Hydra's eye	1	Rare (~1/200)	Not sold
	Hydra's fang	1	Rare (~1/200)	Not sold
	Hydra's heart	1	Rare (~1/200)	Not sold
	Hydra tail	1	Rare (~1/500)	2,167,602
	Hydra leather	1	Rare (~1/500)	1,628,899
	Hydra's claw	1	Very rare (~1/1,000)	1,624,801
	Dragon knife	500–1,000	Very rare (~1/2,000)	941,000–1,882,000
	Dragon thrownaxe	500–1,000	Very rare (~1/2,000)	431,000–862,000

Weapons and armour

	Item	Quantity	Rarity	GE market price
	Mystic fire staff	1	Common (~16/100)	25,119
	Mystic water staff	1	Common (~16/100)	25,152
	Battlestaff	8–12 (noted)	Common (~10/100)	65,136–97,704
	Black d'hide body	1	Common (~10/100)	7,581
	Dragon longsword	1	Common (~6/100)	59,416
	Dragon med helm	1	Common (~6/100)	59,119
	Rune platebody	1	Common (~6/100)	38,590
	Dragon battleaxe	1	Common (~4/100)	119,370
	Rune platelegs	1	Uncommon (~3/100)	37,929
	Rune plateskirt	1	Uncommon (~3/100)	37,975
	Mystic robe top (light)	1	Uncommon (~2/100)	71,344
	Mystic robe bottom (light)	1	Uncommon (~2/100)	47,420

Runes and ammunition

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

Herbs

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

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

Seeds

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

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

Other

	Item	Quantity	Rarity	GE market price
	Coins	40,000–60,000	Common (~18/100)	Not sold
	Shark	2–4	Common (~14/100)	1,712–3,424
	Ranging potion(3)	1	Common (~14/100)	1,373
	Super restore(3)	2	Common (~14/100)	15,356
	Dragon bones	30 (noted)	Common (~12/100)	71,040
	Rare drop table	1–2	Common (~4/100)	Not sold
	Crystal key	1	Uncommon (~2/100)	22,683

Tertiary drops

	Item	Quantity	Rarity	GE market price
	Clue scroll (hard)	1	Rare	Not sold
	Clue scroll (elite)	1	Rare	Not sold
	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	3,000	Rare (1/145.45)	Not sold
	Loop half of key	1	Rare (1/158.76; 1/158.35)	8,589
	Tooth half of key	1	Rare (1/167.05; 1/166.59)	13,381
	Uncut sapphire	1	Rare (1/640; 1/480)	858
	Runite bar	1	Rare (1/640)	12,436
	Unknown talisman (please specify)	1	Rare (1/922.52; 1/882.76)	Error
	Nature rune	67	Very rare (1/1,066.67)	16,951
	Rune 2h sword	1	Very rare (1/1,066.67)	37,961
	Rune battleaxe	1	Very rare (1/1,066.67)	24,574
	Uncut emerald	1	Very rare (1/1,280; 1/960)	908
	Law rune	45	Very rare (1/1,600)	12,690
	Death rune	45	Very rare (1/1,600)	11,340
	Steel arrow	150	Very rare (1/1,600)	4,950
	Rune arrow	42	Very rare (1/1,600)	2,646
	Adamant javelin	20	Very rare (1/1,600)	820
	Rune sq shield	1	Very rare (1/1,600)	22,662
	Dragonstone	1	Very rare (1/1,600)	12,072
	Silver ore	100 (noted)	Very rare (1/1,600)	7,900
	Uncut ruby	1	Very rare (1/2,560; 1/1,920)	1,495
	Rune kiteshield	1	Very rare (1/3,200)	32,206
	Dragon med helm	1	Very rare (1/3,200)	59,119
	Rune spear	1	Very rare (1/3,378.14; 1/3,366.58)	12,094
	Shield left half	1	Very rare (1/6,756.29; 1/6,733.15)	65,497
	Dragon spear	1	Very rare (1/9,008.38; 1/8,977.53)	37,409
	Uncut diamond	1	Very rare (1/10,240; 1/7,680)	2,977
	Rune javelin	5	Very rare (1/20,480; 1/15,360)	755

Konar's drop table

If killed on a Slayer assignment by Konar quo Maten, this monster has a 1 in 50 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	25–35 (noted)	Rare (1/620)	74,425–104,195
	Uncut ruby	25–35 (noted)	Rare (1/620)	37,375–52,325
	Coal	300–500 (noted)	Rare (1/620)	68,700–114,500
	Coins	50,000–150,000	Rare (1/620)	Not sold
	Gold ore	100–200 (noted)	Rare (1/775)	34,700–69,400
	Adamant bolts(unf)	200–300	Rare (1/775)	39,800–59,700
	Runite bolts (unf)	200–300	Rare (1/775)	58,200–87,300
	Dragon arrowtips	50–200	Rare (1/775)	69,400–277,600
	Iron ore	350–500 (noted)	Very rare (1/1,033)	51,450–73,500
	Rune full helm	1–2 (noted)	Very rare (1/1,033)	20,719–41,438
	Rune platelegs	1–2 (noted)	Very rare (1/1,033)	37,929–75,858
	Rune platebody	1–2 (noted)	Very rare (1/1,033)	38,590–77,180
	Fish (scales to level)	Varies	Very rare (1/1,033)	Not sold
	Runite ore	10–15 (noted)	Very rare (1/1,550)	110,360–165,540
	Palm tree seed	1–4	Very rare (1/3,100)	51,199–204,796
	Magic seed	1–4	Very rare (1/3,100)	186,369–745,476
	Celastrus seed	1–4	Very rare (1/3,100)	57,017–228,068
	Dragonfruit tree seed	1–4	Very rare (1/3,100)	73,305–293,220
	Redwood tree seed	1	Very rare (1/3,100)	81,449
	Torstol seed	1–4	Very rare (1/3,100)	73,379–293,516
	Snapdragon seed	1–4	Very rare (1/3,100)	59,078–236,312
	Ranarr seed	1–4	Very rare (1/3,100)	52,031–208,124
	Pure essence	3,000–5,000 (noted)	Very rare (1/3,100)	12,000–20,000
	Broken dragon hasta	1	Very rare (1/10,000)	180,123
	Mystic robe top (dusk)	1	Very rare (1/50,000)	141,260
	Mystic robe bottom (dusk)	1	Very rare (1/50,000)	77,522
	Mystic gloves (dusk)	1	Very rare (1/50,000)	16,473
	Mystic boots (dusk)	1	Very rare (1/50,000)	17,118
	Mystic hat (dusk)	1	Very rare (1/50,000)	28,130

Gallery

• 

  A concept of the Alchemical Hydra shown during RuneFest 2018.

• 

  A teaser image of the Alchemical Hydra in an area resembling Dragonkin architecture

• 

  The decapitation of one of the boss's heads, created by Mod Ghost

• 

  A piece of official artwork depicting the Alchemical Hydra.

Changes

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