Alchemical Hydra
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This article has a strategy guide here. All information on mechanics and strategy will be on this page.
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| Alchemical Hydra | |||||||||||||||||||
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| 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, 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 | |||||||||||||||||||
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The Alchemical Hydra is a boss found in lower level of the Karuulm Slayer Dungeon in Mount Karuulm, requiring level 95 Slayer to kill. 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.
Unlike normal hydras, the Alchemical Hydra can only be killed while on a hydra slayer task, which are only assigned by Konar. In addition, as it is only found within the volcano, players who have not completed the elite Kourend & Kebos Diary must wear boots of stone, boots of brimstone, or granite boots to protect themselves from the extreme heat of the dungeon floor.
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, as well as the hydra claw, which is combined with a Zamorakian hasta to create the dragon hunter lance.
Contents
The boss's lair[edit | edit source]
To reach the boss, players must run north past the Tasakaal, then east past the hydras. They will then reach the entrance to the lair by Orrvor quo Maten. Alternatively, players with level 88 Agility can reach it safely by using the mysterious pipe just behind Kaal-Ket-Jor, though this takes roughly the same time as reaching it by running past the 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.
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 25 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.
Unique and pet drop rates are based off Mod Munro's Twitter.[2] Other estimated drop rates are based off 10,518 kills.[3]
100%[edit | edit source]
Item Quantity Rarity GE market price 
Hydra bones 2 Always 10,130
Unique[edit | edit source]
- Due to a unique mechanic, items are very slightly rarer than officially announced.[4]
Item Quantity Rarity GE market price 
Hydra's eye 1 Rare (~1/181)[a 1] Not sold 
Hydra's fang 1 Rare (~1/181)[a 1] Not sold 
Hydra's heart 1 Rare (~1/181)[a 1] Not sold 
Hydra tail 1 Rare (~1/513) 260,195 
Hydra leather 1 Rare (~1/514) 6,256,427 
Hydra's claw 1 Very rare (1/1,001) 20,061,201 
Dragon thrownaxe 500–1,000 Very rare (1/2,000) 145,000–290,000 
Dragon knife 500–1,000 Very rare (~1/2,001) 1,200,000–2,400,000
Weapons and armour[edit | edit source]
Item Quantity Rarity GE market price 
Mystic fire staff 1 Common (~16/100)[b 1] 25,362 
Mystic water staff 1 Common (~16/100)[b 1] 25,281 
Battlestaff 8–12 (noted) Common (~10/100) 67,576–101,364 
Black d'hide body 1 Common (~10/100) 7,600 
Dragon longsword 1 Common (~6/100) 59,470 
Dragon med helm 1 Common (~6/100) 59,121 
Rune platebody 1 Common (~6/100)[b 2] 38,534 
Dragon battleaxe 1 Common (~4/100) 119,399 
Rune platelegs 1 Uncommon (~3/100)[b 2] 37,947 
Rune plateskirt 1 Uncommon (~3/100)[b 2] 37,999 
Mystic robe top (light) 1 Uncommon (~2/100)[b 3] 71,818 
Mystic robe bottom (light) 1 Uncommon (~2/100)[b 3] 47,599
- ↑ 1.0 1.1 Players will receive Mystic fire staff together with Mystic water staff
- ↑ 2.0 2.1 2.2 Players will receive Rune platebody together with Rune platelegs or Rune plateskirt
- ↑ 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 150–300 Common (~12/100) 14,700–29,400 
Death rune 150–300 Common (~12/100) 33,450–66,900 
Blood rune 150–300 Common (~12/100) 43,650–87,300 
Astral rune 150–300 Common (~12/100) 22,050–44,100 
Dragonstone bolts (e) 100–120 Common (~4/100) 49,200–59,040 
Onyx bolts (e) 35–50 Uncommon (~2/100) 305,550–436,500
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 10–15 (noted) Uncommon (~1/40) 67,920–101,880 
Grimy avantoe 10–15 (noted) Uncommon (~1/40) 15,490–23,235 
Grimy snapdragon 10–15 (noted) Uncommon (~1/40) 81,680–122,520 
Grimy torstol 10–15 (noted) Uncommon (~1/40) 70,890–106,335 
Grimy kwuarm 25–30 (noted) Uncommon (~1/40) 25,800–30,960 
Grimy cadantine 25–30 (noted) Uncommon (~1/40) 30,525–36,630 
Grimy lantadyme 25–30 (noted) Uncommon (~1/40) 29,850–35,820 
Grimy dwarf weed 25–30 (noted) Uncommon (~1/40) 15,000–18,000
Seeds[edit | edit source]
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) 95,244–142,866 
Ranarr seed 2–3 Rare (~1/240) 77,886–116,829 
Snapdragon seed 2–3 Rare (~1/240) 103,514–155,271 
Willow seed 2–3 Rare (~1/266.67) 8,220–12,330 
Watermelon seed 30–45 Rare (~1/320) 3,450–5,175 
Maple seed 2–3 Rare (~1/320) 72,980–109,470 
Yew seed 2–3 Rare (~1/320) 164,178–246,267 
Teak seed 2–3 Rare (~1/320) 114–171 
Mahogany seed 2–3 Rare (~1/320) 6,736–10,104 
Papaya tree seed 2–3 Rare (~1/400) 7,274–10,911 
Palm tree seed 2–3 Rare (~1/533.33) 73,216–109,824 
Magic seed 2–3 Rare (~1/640) 271,360–407,040 
Spirit seed 2–3 Very rare (~1/1,066.67) Not sold 
Celastrus seed 2–3 Very rare (~1/1,600) 161,024–241,536 
Dragonfruit tree seed 2–3 Very rare (~1/3,200) 312,888–469,332 
Redwood tree seed 2–3 Very rare (~1/3,200) 67,520–101,280
Other[edit | edit source]
Item Quantity Rarity GE market price 
Coins 40,000–60,000 Common (~18/100) Not sold 
Shark 2–4 Common (~14/100) 1,482–2,964 
Ranging potion(3) 1 Common (~14/100)[c 1] 932 
Super restore(3) 2 Common (~14/100)[c 1] 14,452 
Dragon bones 30 (noted) Common (~12/100) 67,260 
Rare drop table 1–2 Common (~4/100) Not sold 
Crystal key 1 Uncommon (~2/100) 21,874
- ↑ 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 
Brimstone key 1 Uncommon (1/50) Not sold 
Alchemical hydra heads 1 Rare (1/256) Not sold 
Clue scroll (hard) 1 Rare (1/100) Not sold 
Clue scroll (elite) 1 Rare (1/256) Not sold 
Jar of chemicals 1 Very rare (1/2,000) 296,210 
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; 1/157.54)[R 1] 11,938 
Tooth half of key 1 Rare (1/167.05; 1/165.7)[R 1] 9,629 
Uncut sapphire 1 Rare (1/640; 1/320)[R 1] 628 
Runite bar 1 Rare (1/640) 12,471 
Nature rune 67 Very rare (1/1,066.67) 13,735 
Rune 2h sword 1 Very rare (1/1,066.67) 37,973 
Rune battleaxe 1 Very rare (1/1,066.67) 24,588 
Uncut emerald 1 Very rare (1/1,280; 1/640)[R 1] 766 
Law rune 45 Very rare (1/1,600) 8,955
Death rune 45 Very rare (1/1,600) 10,035 
Steel arrow 150 Very rare (1/1,600) 4,800 
Rune arrow 42 Very rare (1/1,600) 4,242 
Adamant javelin 20 Very rare (1/1,600) 1,200 
Rune sq shield 1 Very rare (1/1,600) 22,611 
Dragonstone 1 Very rare (1/1,600) 12,175 
Silver ore 100 (noted) Very rare (1/1,600) 7,400 
Uncut ruby 1 Very rare (1/2,560; 1/1,280)[R 1] 1,412 
Rune kiteshield 1 Very rare (1/3,200) 32,195
Dragon med helm 1 Very rare (1/3,200) 59,121 
Rune spear 1 Very rare (1/3,378.14; 1/395.88)[R 1] 12,049 
Shield left half 1 Very rare (1/6,756.29; 1/791.75)[R 1] 65,613 
Unknown talisman
(please specify)1 Very rare (1/6,826.67; 1/3,413.33)[R 1] Not sold 
Dragon spear 1 Very rare (1/9,008.38; 1/1,055.67)[R 1] 37,971 
Uncut diamond 1 Very rare (1/10,240; 1/5,120)[R 1] 2,867 
Rune javelin 5 Very rare (1/20,480; 1/10,240)[R 1] 800
Gallery[edit | edit source]
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[edit | edit source]
| Date | Changes |
|---|---|
| 14 January 2019 (update) | Hotfix The Alchemical Hydra gained access to Konar's drop table.[5] |
| 31 January 2019 (update) | The jar of chemicals was added as a possible tertiary drop. |
| 7 February 2019 (update) | The alchemical hydra heads was added as a possible tertiary drop. |
References[edit | edit source]
| NPCs | |
| Unique drops | |
| Equipment | |
| Other | |
Dragons and dragon-like races | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chromatic dragons | |||||||||
| Metal dragons | |||||||||
| Slayer monsters | |||||||||
| Other |
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