The Alchemical Hydra boss from Oldschool Runescape

The Alchemical Hydra boss from Oldschool RunescapeThe Alchemical Hydra boss from Oldschool Runescape

The Alchemical Hydra osrs is one of the most challenging bosses in Old School RuneScape (OSRS), a popular MMORPG game. Located in the Karuulm Slayer Dungeon on the continent of Zeah, it is a multi-phased boss that requires a lot of strategies to defeat. It requires a high slayer level to be assigned this monster, be sure to check out an article on 99 slayer guide, if you want to train the skill in osrs. However, in this article, we’ll explore the different aspects of the Alchemical Hydra, including its attacks, mechanics, and loot.

Overview of the Alchemical Hydra

The Alchemical Hydra is a three-headed monster with multiple attacks and mechanics. It has a total of 330 hit points, making it one of the strongest bosses in the game. The Hydra has a variety of attacks, including melee, ranged, magic, and fire breath. It can also spawn smaller hydras during the battle, which players must defeat while avoiding the boss’s attacks and acid pools.

First Phase: Melee and Ranged Attacks

In the first phase of the battle, the Hydra will attack with both melee and ranged attacks. It will also use its fiery breath attack, which can deal massive damage. Players must dodge this attack by moving out of the way. During this phase, players must also avoid the acid pools, which can deal additional damage if not avoided.

Second Phase: Magic Attacks and Smaller Hydras

In the second phase, the Hydra will become immune to ranged attacks and will use magic attacks instead. The magic attacks can hit multiple players at once, making it crucial for players to spread out during this phase. The Hydra will also spawn smaller hydras during this phase, which players must defeat while avoiding the acid pools and the boss’s attacks.

Third Phase: Multiple Heads and Unique Attacks

The third phase is the most challenging phase of the battle. The Hydra will spawn multiple heads, each with its own unique attack style. Players must switch between attacking the different heads while avoiding Hydra’s acid and magic attacks. The third phase also includes smaller hydras, making it even more difficult to navigate.

Rewards for Defeating the Alchemical Hydra

Defeating the Alchemical Hydra rewards players with valuable loot, including the Hydra’s Claw, which can be combined with the Hydra’s Eye and Heart to create the Brimstone Ring. The Brimstone Ring is one of the most powerful rings in the game, providing significant bonuses to both melees and ranged combat.


The Alchemical Hydra is one of the most challenging bosses in Old School RuneScape. Its multi-phased battle requires players to be well-prepared with the right gear, food, and potions. With the right strategy and gear, players can overcome this powerful creature and earn valuable rewards.

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