Conquer the Oilwell Basin's apex predator, the ancient Black Flame—also known as Nu Udra—in Monster Hunter Wilds. This formidable beast poses a significant threat to the village, demanding your immediate attention.
Recommended Videos: Monster Hunter Wilds Nu Udra Boss Fight Guide

Known Habitats: Oilwell Basin
Breakable Parts: Head and Arms
Recommended Elemental Attack: Water
Effective Status Effects: Poison (2x), Sleep (2x), Paralysis (1x), Blastblight (1x), Stun (2x), Exhaust (2x)
Effective Items: Pitfall Trap, Shock Trap
Tentacle Tactics
Nu Udra presents a formidable challenge in Monster Hunter Wilds. Its massive tentacles grant it an extensive reach, making evasion tricky. However, these same tentacles offer melee users the closest points of contact. Severing its arms yields valuable materials, but proceed cautiously—these limbs pack a powerful punch.
Target the Maw
Ranged weapon users have more strategic options. However, the mouth remains the optimal target, boasting a 4-star weakness. Locating it can be difficult due to Nu Udra's predominantly black hide. The head is a viable alternative, offering a 3-star weakness to ammo damage, but remains effective for blunt and cut damage.
Harness the Power of Watermoss
Nu Udra possesses a fire affinity. In addition to its limb attacks, it employs fiery assaults. At a certain point, it even ignites itself, making close-quarters combat hazardous due to the Fireblight debuff. Strategically deploying Watermoss is crucial for mitigating this threat and enabling safer attacks.
Embrace Fire Resistance
Struggling against the Black Flame? Equipping fire-resistant gear is highly recommended. The Quematrice armor set, with its inherent Fire Resistance skill, is an excellent choice. Consider equipping decorations that reduce elemental damage; the Fire Res Jewel is ideal, while the Stream Jewel boosts Water Attack damage.
Evade the Grasp
Nu Udra's arsenal includes many dangerous moves, but its grab attack is particularly menacing. If positioned too closely, it may ensnare you with its tentacles, followed by a fiery blast. During the brief pause after the grab, use a knife to break free, or counterattack its weak point with a Slinger.
Related: Monster Hunter Wilds Weapon Tier List (Best Weapons to Use)
Capturing the Black Flame

To capture Nu Udra, prepare either a Pitfall or Shock Trap. However, deployment requires weakening the monster to near-death. Observe the skull icon beside the boss icon to gauge the optimal timing. Luring it with meat or simply running behind the trap while it targets you are effective strategies. Once trapped, immediately use a Tranquilizer to subdue it; you have approximately five seconds before it breaks free.
This comprehensive guide covers defeating and capturing Nu Udra in Monster Hunter Wilds. This challenging hunt is significantly easier with multiplayer assistance.
Monster Hunter Wilds is available now on PlayStation, Xbox, and PC.