Alchemical Hydra
The Slayer capstone
A four-phase Slayer boss requiring a hard task unlock. Rewards the brimstone ring and hydra leather for the best boots in the game.
Profit
3.1m/hr
~103k / kill
Kills / hr
30
Experienced
Combat lvl
95+
Recommended
Hitpoints
1,100
Max hit
26
Unprotected
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Should you fight this?
What you get out of Alchemical Hydra, so you can decide if it fits your goals right now.
- Only source of hydra leather → Ferocious gloves (melee BiS).
- Brimstone ring is a versatile all-style ring upgrade.
- Strong Slayer gp and consistent alchemicals per task.
- Dragon hunter lance/crossbow shred its dragon typing.
Gear setups
Pick the setup that matches your bank. Every upgrade here links back to the Gear hub.
- Weapon
- Toxic blowpipe / Dragon hunter crossbow
- Head
- Masori mask (f) / armadyl helmet
- Body
- Masori / armadyl chestplate
- Legs
- Masori / armadyl chainskirt
- Ring
- Brimstone / Venator ring
Upgrade paths for this fight
Strategy
- 1
Phase prayers
Each colour phase attacks with a set style. Swap Protect from Magic/Missiles to match the current phase.
- 2
Chemical vents
During the fire/lightning/acid phases, move to a safe vent to avoid heavy chip damage while attacking.
- 3
Enrage / final phase
The final phase alternates styles rapidly — flick prayers and burst it down before it can special.
Notable drops
| Item | Rarity | Value |
|---|---|---|
| Hydra's claw Unique | 1/1000 | 130m |
| Hydra leather Unique | 1/514 | 4.1m |
| Hydra tail | 1/512 | 320k |
| Dragon knife (piece) | Common | 60k |
| Jar of chemicals | 1/2000 | 150k |
| Ikkle hydra pet | 1/3000 | — |
Progression after this boss
Once Alchemical Hydra feels comfortable, these are the natural next steps up in difficulty and payout.