|Released||10 January 2019 (Update)|
|Examine||A ferocious Alchemical Hydra!|
|Max hit||17+17 (default)|
|Attack style||Ranged, Magic|
|Respawn time||43 ticks (25.8 seconds)|
|Slayer XP||1,320 xp|
|Monster ID||8615, 8616|
The Alchemical Hydra is a boss found in the lower level of the Karuulm Slayer Dungeon in Mount Karuulm, requiring level 95 Slayer to kill. The Alchemical Hydra was the creation of a Dragonkin named Karuulm. While Karuulm 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.
Players should be wary about running back to collect items after death, and make sure to bring protection against the hot floor. The damage from the floor will interrupt attempts to reclaim items, making it impossible to do so, and dying a second time will wipe the death storage.
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.
The music which plays when fighting the Alchemical Hydra
Location[edit | edit source]
|Karuulm Slayer Dungeon (Lower Level)||426||1||Maplink|
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.
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 (that is, at 825, 550, and 275 Hitpoints), it will lose one of its heads and change 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 chance of getting an item for every roll on the standard loot table. For example, a listed drop rate of 2/100 indicates that you have two 2/100 chances of receiving that item.
Drops remain on the ground for 30 minutes, or until the player leaves the instanced area.
Drop rates estimated based on 292,738 kills from the Drop Rate Project, unless otherwise cited.
The average Alchemical Hydra kill while on a Konar task is worth 159,960.86.
100%[edit | edit source]
Pre-roll[edit | edit source]
Due to a unique mechanic, items are slightly rarer than officially announced. The effective rates are displayed here.
|Hydra's eye||1||1/181[d 1]||Not sold||60,000|
|Hydra's fang||1||1/181[d 1]||Not sold||60,000|
|Hydra's heart||1||1/181[d 1]||Not sold||60,000|
- The order in which players receive the items is: Hydra's eye, Hydra's fang and finally Hydra's heart.
Weapons and armour[edit | edit source]
|Mystic fire staff||1||2 × 8/101[d 1]||25,175||25,500|
|Mystic water staff||1||2 × 8/101[d 1]||25,051||25,500|
|Battlestaff||8–12 (noted)||2 × 5/101||63,776–95,664||33,600–50,400|
|Black d'hide body||1||2 × 5/101||7,301||8,088|
|Dragon longsword||1||2 × 3/101||59,200||60,000|
|Dragon med helm||1||2 × 3/101||58,675||60,000|
|Rune platebody||1||2 × 3/101[d 2]||38,496||39,000|
|Dragon battleaxe||1||2 × 2/101||119,136||120,000|
|Rune platelegs||1||2 × 1.5/101[d 2]||37,916||38,400|
|Rune plateskirt||1||2 × 1.5/101[d 2]||37,981||38,400|
|Mystic robe top (light)||1||2 × 1/101[d 3]||71,439||72,000|
|Mystic robe bottom (light)||1||2 × 1/101[d 3]||48,127||48,000|
Runes and ammunition[edit | edit source]
|Chaos rune||150–300||2 × 6/101||12,900–25,800||8,100–16,200|
|Death rune||150–300||2 × 6/101||25,050–50,100||16,200–32,400|
|Blood rune||150–300||2 × 6/101||32,850–65,700||36,000–72,000|
|Astral rune||150–300||2 × 6/101||16,050–32,100||4,500–9,000|
|Dragonstone bolts (e)||100–120||2 × 2/101||41,200–49,440||63,700–76,440|
|Onyx bolts (e)||35–50||2 × 1/101||304,745–435,350||315,000–450,000|
Herbs[edit | edit source]
There is a 10/101 chance to get noted herbs.
|Grimy avantoe||10–15 (noted)||2 × 1/64.6||18,420–27,630||100–150|
|Grimy kwuarm||25–30 (noted)||2 × 1/64.6||64,975–77,970||300–360|
|Grimy ranarr weed||10–15 (noted)||2 × 1/80.8||66,320–99,480||180–270|
|Grimy snapdragon||10–15 (noted)||2 × 1/80.8||80,230–120,345||120–180|
|Grimy cadantine||25–30 (noted)||2 × 1/80.8||66,000–79,200||325–390|
|Grimy dwarf weed||25–30 (noted)||2 × 1/80.8||21,525–25,830||350–420|
|Grimy lantadyme||25–30 (noted)||2 × 1/107.7||40,950–49,140||325–390|
|Grimy torstol||10–15 (noted)||2 × 1/107.7||42,910–64,365||150–225|
Seeds[edit | edit source]
There is a 2/101 chance of rolling the tree-herb seed drop table.
|Ranarr seed||2–3||2 × 1/420.8||65,076–97,614||60–90|
|Snapdragon seed||2–3||2 × 1/450.9||93,340–140,010||72–108|
|Torstol seed||2–3||2 × 1/573.9||37,476–56,214||84–126|
|Watermelon seed||30–45||2 × 1/631.2||480–720||990–1,485|
|Willow seed||2–3||2 × 1/631.2||492–738||18–27|
|Mahogany seed||2–3||2 × 1/701.4||6,998–10,497||56–84|
|Maple seed||2–3||2 × 1/701.4||27,608–41,412||56–84|
|Teak seed||2–3||2 × 1/701.4||166–249||56–84|
|Yew seed||2–3||2 × 1/701.4||97,756–146,634||170–255|
|Papaya tree seed||2–3||2 × 1/901.8||4,622–6,933||138–207|
|Magic seed||2–3||2 × 1/1,052.1||164,636–246,954||506–759|
|Palm tree seed||2–3||2 × 1/1,262.5||79,782–119,673||304–456|
|Spirit seed||2–3||2 × 1/1,578.1||Not sold||0|
|Dragonfruit tree seed||2–3||2 × 1/2,104.2||313,126–469,689||516–774|
|Celastrus seed||2–3||2 × 1/3,156.2||161,818–242,727||648–972|
|Redwood tree seed||2–3||2 × 1/3,156.2||74,032–111,048||780–1,170|
Other[edit | edit source]
|Coins||5,550–25,550||2 × 0.5/101||5,550–25,550||5,550–25,550|
|Coins||40,000–60,000||2 × 9.5/101||40,000–60,000||40,000–60,000|
|Shark||2–4||2 × 7/101||1,474–2,948||204–408|
|Ranging potion(3)||1||2 × 7/101[d 1]||437||172|
|Super restore(3)||2||2 × 7/101[d 1]||15,686||288|
|Dragon bones||30 (noted)||2 × 6/101||76,920||2,880|
|Crystal key||1||2 × 1/101||22,050||90|
Rare drop table[edit | edit source]
|Nothing||N/A||2 × 1/556.67; Never[d 1]||N/A||N/A|
|Coins||3,000||2 × 1/615.62||3,000||3,000|
|Loop half of key||1||2 × 1/641.39; 1/636.61[d 2]||10,671||60|
|Tooth half of key||1||2 × 1/641.39; 1/636.61[d 2]||9,994||60|
|Uncut sapphire||1||2 × 1/2,585.6; 1/1,313[d 2]||262||15|
|Runite bar||1||2 × 1/2,585.6||12,473||3,000|
|Nature rune||67||2 × 1/4,309.33||8,576||7,236|
|Rune 2h sword||1||2 × 1/4,309.33||37,994||38,400|
|Rune battleaxe||1||2 × 1/4,309.33||24,553||24,960|
|Uncut emerald||1||2 × 1/5,171.2; 1/2,626[d 2]||506||30|
|Law rune||45||2 × 1/6,464||5,985||6,480|
|Death rune||45||2 × 1/6,464||7,515||4,860|
|Steel arrow||150||2 × 1/6,464||1,050||1,050|
|Rune arrow||42||2 × 1/6,464||2,520||10,080|
|Adamant javelin||20||2 × 1/6,464||1,240||1,920|
|Rune sq shield||1||2 × 1/6,464||22,659||23,040|
|Dragonstone||1||2 × 1/6,464||11,678||6,000|
|Silver ore||100 (noted)||2 × 1/6,464||6,400||4,500|
|Uncut ruby||1||2 × 1/10,342.4; 1/5,252[d 2]||1,146||60|
|Rune kiteshield||1||2 × 1/12,928||32,108||32,640|
|Dragon med helm||1||2 × 1/12,928||58,675||60,000|
|Rune spear||1||2 × 1/13,647.7; 1/1,583.52[d 2]||11,812||12,480|
|Shield left half||1||2 × 1/27,295.41; 1/3,167.04[d 2]||65,496||66,000|
|Nature talisman||1||2 × 1/27,579.73; 1/14,005.33[d 2]||185||2|
|Dragon spear||1||2 × 1/36,393.87; 1/4,222.71[d 2]||37,185||37,440|
|Uncut diamond||1||2 × 1/41,369.6; 1/21,008[d 2]||3,038||120|
|Rune javelin||5||2 × 1/82,739.2; 1/42,016[d 2]||805||1,200|
Tertiary[edit | edit source]
|Brimstone key||1||1/40||Not sold||N/A|
|Clue scroll (hard)||1||1/100[d 1]||Not sold||12|
|Alchemical hydra heads||1||1/256||Not sold||30,000|
|Clue scroll (elite)||1||1/256[d 2]||Not sold||12|
|Jar of chemicals||1||1/2,000||33,073||0|
|Ikkle hydra||1||1/3,000||Not sold||N/A|
Combat Achievements[edit | edit source]
|Alchemical Veteran||Kill the Alchemical Hydra 75 times.||Kill Count||Elite|
|Alchemical Master||Kill the Alchemical Hydra 150 times.||Kill Count||Master|
|Lightning Lure||Kill the Alchemical Hydra without being hit by the lightning attack.||Mechanical||Master|
|Mixing Correctly||Kill the Alchemical Hydra without empowering it.||Mechanical||Master|
|The Flame Skipper||Kill the Alchemical Hydra without letting it spawn a flame wall attack.||Mechanical||Master|
|Unrequired Antipoisons||Kill the Alchemical Hydra without being hit by the acid pool attack.||Mechanical||Master|
|Don't Flame Me||Kill the Alchemical Hydra without being hit by the flame wall attack.||Mechanical||Master|
|Working Overtime||Kill the Alchemical Hydra 15 times without leaving the room.||Stamina||Master|
|Alcleanical Hydra||Kill the Alchemical Hydra without taking any damage.||Perfection||Master|
|Alchemical Speed-Chaser||Kill the Alchemical Hydra in less than 1 minute 45 seconds.||Speed||Master|
|No Pressure||Kill the Alchemical Hydra using only Dharok's Greataxe as a weapon whilst having no more than 10 Hitpoints throughout the entire fight.||Restriction||Grandmaster|
|Alchemical Speed-Runner||Kill the Alchemical Hydra in less than 1 minute 20 seconds.||Speed||Grandmaster|
Gallery[edit | edit source]
A teaser image of the Alchemical Hydra in an area resembling Dragonkin architecture
Changes[edit | edit source]
|9 March 2022
Certain Combat Achievement tasks now perform their checks correctly in the final phase of the Alchemical Hydra fight.
|26 August 2021
Alchemical Hydra's animation issues have been fixed.
|14 July 2021
(update | poll)
The Alchemical Hydra now has an animation to indicate it changing attack styles.
|13 June 2019
Players can no longer logout in the Alchemical Hydra room due to an issue where players trying to log out in the room kept getting stuck in a state where they couldn't attack the boss but it kept trying to attack them.
|7 February 2019
(update | poll)
The alchemical hydra heads were added as a possible tertiary drop.
|31 January 2019
The jar of chemicals was added as a possible tertiary drop.
|14 January 2019
The Alchemical Hydra gained access to Konar's drop table.
References[edit | edit source]
- Jagex. Mod Ash's Twitter account. 13 January 2019. (Archived from the original on 16 April 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."
- Whether a unique item is dropped is determined by the game rolling each item in succession, and if it fails, the next item is rolled. If any item is successfully rolled, it will be dropped, and if no item is rolled, it is replaced by a regular drop. The order is dragon thrownaxe, dragon knife, hydra's claw, hydra tail, hydra leather and brimstone ring piece. For example, a brimstone ring piece rate follows the formula
Jagex. Mod Munro's Twitter account. 14 February 2019. (Archived from the original on 16 Apr 2019.) Mod Munro: "Yes, your edit to the wiki is correct."
- Jagex. Mod Munro's Twitter account. 13 February 2019. (Archived from the original on 25 March 2019.) Mod Munro: "As I mentioned on the Q & A, here are the pictures of the drop rates for various parts of Kebos. This time with the correct drop rate for the pieces of the Brimstone Ring."
- Jagex. Old School RuneScape's Twitter account. 14 January 2019. (Archived from the original on 25 May 2020.) Old School RuneScape: "3. The Alchemical Hydra now accesses Konar's drop table."