Special Equipment 10 requires you to defeat 100 enemies using the Vessel of Dark Pursuit Weapon. You need to find the artifact and then earn the weapon by taking down a tough boss. Here is a full walkthrough on where to find the artifact and weapon location.
Where to Find the Sealed Abyss Artifact
The Vessel of Dark Pursuit Challenge artifact is located at a fork in the road north of the character N in Pailune on the map. Refer to the location below.


How to Get the Vessel of Dark Pursuit
Head to the Sanctum of Absolution and defeat the Antumbra’s Sword Boss. This is one of the toughest fights in the game.


Easy Method to beat the Antumbra’s Sword Boss
Before heading into the fight, make sure your Focus ability is fully upgraded to level three. When you are ready, approach the altar inside the sanctum to trigger the boss fight. From there, the strategy is simple:
- Stay in Focus mode as much as possible throughout the fight.
- While in Focus, spam the block button to automatically parry the boss’s attacks, then follow up with your own hits.
- If the boss winds up a red attack, dodge out of the way immediately, then go straight back into Focus mode and continue the same pattern.

Once the boss is down, clear out any remaining enemies in the area to fully liberate the sanctum. You will then be rewarded with the Vessel of Dark Pursuit.