An echo system is a sci-fi lore mechanic that Wuthering Waves makes look complicated, read complicated in the tutorial, but only makes sense when you’re floundering on the field.
What is the Echo System in Wuthering Waves?
Despite what you might think, this mechanic is actually really interesting once you break it down, and it will be a huge key for improving your combat abilities and allowing you to be more flexible on the battlefield. After defeating an enemy, you can absorb them into the Echo System. It is a small gourd-like object that the player character or Rover keeps on themselves.
The enemies you’ve collected can then be equipped from the menu, where they’ll be added to your inventory. By copying the movements you have seen in battle, these TDs allow you to expand your battle repertoire in Wuthering Waves.