In the *Dungeon Fighter Online* universe, the dragonkin have long been a formidable challenge for heroes, and this continues in *The First Berserker: Khazan*. Facing the Viper, a high-ranking dragonkin created by Hismar to lead defeated dragons and sow chaos, requires strategic caution. Here's a detailed guide on how to conquer this powerful adversary in *The First Berserker: Khazan*.

Phase 1

Before engaging the Viper, ensure your skills are optimized for your chosen weapon. Summon the Spirit of Advocacy just outside the boss gates for additional support. When facing the Viper, be vigilant for its attack patterns:

• A three-hit combo starting with two stabs followed by a spear swing.
• A two-hit spear-swinging combo from left to right.
• A large sweep followed by a leap away, then throwing its spear up to two times; be cautious of the returning weapon.
• A four-hit combo with a spinning spear, followed by swipes in both directions.

Mastering the timing of your blocks and executing Perfect Guards will rapidly deplete the Viper's stamina. Keep up the pressure with continuous attacks and Brutal Attacks when opportunities arise. The Spirit of Advocacy can serve as a useful decoy. At around half health, the Viper will roar and summon an energy tornado; move away to avoid being pulled in.

Post-energy blast, be prepared for the Viper's leaping slam. Watch for its grab attack, indicated by the flashing spear tip, and dodge to the right to evade it. The Viper will also employ a new ranged attack, spinning its spear vertically, followed by a series of jumping attacks.

All previous attacks now deal more damage and include additional hits, so maintain a defensive stance. A successful Perfect Guard on the final hit of its five-hit combo will stagger the boss, allowing you to deal significant damage. Once you deplete its health, the true battle begins.

Phase 2

In Phase 2, the Viper taps into Hismar's power, regaining full health and becoming even more formidable. It uses its fortified left arm for downward smashes and swipes, and a giant sword for slashes. When it roars, brace for two wide-ranging arm attacks followed by a Burst Attack; use Counterattack to stun it and create an opening for attack.

At half health, the Viper summons a storm that darkens the arena. During lightning flashes, it will leap towards you to attack multiple times, ending with a charge and an uppercut. Parry or dodge these moves, and use its aggressive behavior to your advantage. Be aware of its new leaping slam attack and adjust your positioning accordingly.

Monitor your stamina closely to avoid exhaustion during the Viper's sustained combos. Defeating the boss rewards you with over 10,000 Lacrima, Hismar's Scale, several Fallen Lord items, and the Hunter's Ring.

This guide should help you overcome any challenges in defeating the Viper in *The First Berserker: Khazan*. For further assistance with the game, visit The Escapist.