Quick Scoop

The easy way to get the Eyepatch in Broken Blade is to farm the Headless Knight boss on Explosion Island. Community guides say the Eyepatch drops from that boss, and one source reports a 50% drop chance.

Fast route

  1. Get Event Helmets first, since they are needed to summon the Headless Knight.
  1. Travel to Explosion Island and use the altar to summon the boss.
  1. Defeat the Headless Knight and loot the Eyepatch when it drops.
  1. Equip Luck-boosting titles if you have them, since community guides say they can help the grind a bit.

Easiest farming tip

The grind is mainly about getting enough Event Helmets , because the Eyepatch itself is tied to the boss fight rather than a random chest or shop. If you can auto-summon or repeatedly summon the Headless Knight, that is the most efficient loop for farming it.

Tiny note

Some guides say players need around 65 Eyepatches for the Explosion craft, so farming extra can save time later.

TL;DR: farm Event Helmets, summon Headless Knight on Explosion Island, and keep running the boss until the Eyepatch drops.