In Last Epoch, an Echo is a fundamental gameplay element within the Monolith of Fate endgame system. Each Echo represents a distinct zone or map that players explore as part of a Timeline, which is the core structure of the game’s endgame progression Last Epoch Gold.

What Is an Echo?
1. Echoes are individual zones or maps encountered in a Timeline, each with a unique layout and a randomly assigned modifier that affects the enemies within it. These modifiers increase the difficulty and add variety to gameplay by altering enemy stats or behaviors.
2. Echoes have specific objectives that players must complete to progress. Objectives can include killing a mini-boss, defeating certain enemy types, sealing time gates, destroying spires, slaying champions or exiled mages, activating shrines or caches, stabilizing the Echo by closing rifts, or completing arena waves.
3. Completing an Echo grants "stability" to the Timeline, which is necessary to unlock quest Echoes and ultimately the Timeline boss. Stability rewards scale with the distance of the Echo from the Timeline’s center and how thoroughly players clear enemies.

Special Echo Types and Rewards
1. Each Timeline features special Echo types with unique rewards, such as specific gear types or unique items. For example, some Timelines reward unique bows, helmets, gloves, or relics upon completing their special Echoes.
2. Beyond regular Echoes, there are advanced types like Woven Echoes, introduced in Season 2, which add new challenges and rewards related to the Woven Faction. These Echoes can be slotted into the Timeline after completing special Cemetery of the Erased Echoes, expanding the endgame content and customization.
3. Woven Echoes involve fighting new enemy types called the Woven, destroying cocoons that release spirits to empower enemies, and collecting a new currency called Memory Amber. Completing these Echoes also grants access to new gear progression mechanics, such as enchanting class-specific idols.

Gameplay Experience
1. Echoes provide a mix of procedurally generated layouts and objectives, ensuring varied gameplay each run. They are akin to maps or rifts in other ARPGs like Path of Exile or Diablo, offering a structured yet dynamic endgame experience.
2. Players can reset the Timeline’s Echo web by defeating the Shade of Orobyss, which generates a new set of Echoes and modifiers, adding replayability and challenge.
3. The combination of modifiers, objectives, and special Echo types makes Echoes a central and engaging part of Last Epoch’s endgame loop, rewarding players with gear, currency, and progression toward powerful bosses.

In summary, Echoes in Last Epoch are the core endgame maps within Timelines, each with unique layouts, modifiers, and objectives. They provide players with varied challenges and rewards, including special Echo types like Woven Echoes that deepen gameplay complexity and progression. Completing Echoes is essential for advancing through Timelines buy Last Epoch Gold, earning stability, and ultimately facing powerful bosses.