Here's a comprehensive guide for a Fire Blast build for the Assassin class in Diablo 2: Resurrected. This build focuses on maximizing damage output through the Fire Blast skill while also leveraging the Trap skills to control the battlefield.

Fire Blast Build Guide

Build Overview

The Fire Blast Assassin focuses on using the Fire Blast skill along with supporting fire traps to deal significant damage to groups of enemies. This build is effective in both solo and group play, providing excellent crowd control and damage.

Skill Allocation

Burst of Speed
Cloak of Shadows
Mind Blast
Death Sentry

Optional skills

Shadow Warrior
Shadow Master

Twenty points into of the following in this order

Fire Blast
Lightning Sentry
Charged Bolt Sentry
Shock Web
Wake of Fire
Wake of Inferno

    Stat Allocation

    1. Strength: Enough to equip your gear
    2. Dexterity: Enough to equip your gear
    3. Vitality: All Remaining points into Vitality
    4. Energy: 0

    Gear Recommendations

    • Weapons:
      • Heart of the Oak
        +3 Trap +3 Fire Blast Claw

        Shield
        Phoenix Monarch
    • Armor:
      • Enigma
    • Helm:
      • Flickering Flame

    • Rings/Amulet:
      • +2 Assassin 20 FCR Amulet
        FCR STR Mana All resist Ring
        Stone of Jordan
    • Belt:
      • Arachnid Mesh

        Gloves:
        Magefist
    • Boots:
      • War Traveller 

        Mercenary Recommendations

        • Offensive Act 2 Might Mercenary

          Andarial's Visage
          Ethereal Fortitude
          Ethereal Infinity

          Inventory 

          Assassin Torch
          Annihilus
          Gheed's Fortune
          Flame Rift
          28 x 7% Magic Find Small Charm


      Conclusion

      By following this guide, you'll have a powerful Fire Blast build for your Assassin in Diablo 2: Resurrected. The synergy between fire traps and Fire Blast will allow you to control crowds and deal massive damage, making your journey through Sanctuary both thrilling and effective! Enjoy your gameplay!