Mystery's End is a mission in The First Descendant. Read on for a full walkthrough of Mystery's End, its location, rewards, and how to beat Non-smiling Agonia.

Mystery's End Location

White-night Gulch

White-night Gulch (Moongrave Basin)

Mystery's End Walkthrough

Mystery's End Objectives

Occupy the Zone While Connecting to the Ruins System

Make your way to the core of Mystery's End and occupy the area until Arche connects to the Ruins system. You will have to stay inside the circle for the duration of the process.

Use Grappling Hook to Jump Over the Laser Beams

There will be an area with multiple laser beams blocking your way. Use your grappling hook on the wall above you to jump over them. You may have to use the hook again mid-air to reach the other side.

Take Turns Crossing the Platform

After going past the lasers, you will have to jump on the platforms to get to the next area. If you have a team with you, make sure to take turns jumping between platforms, otherwise you might end up blocking one another and end up falling down the pit.

Defeat Non-smiling Agonia

At the final area of the Mystery's End, you will have to defeat Non-smiling Agonia. She is both a melee and range user that utilizes the element of water to strike you down from long-range by raining down water missiles from the sky.

How to Beat Non-smiling Agonia

How to Beat Non-smiling Agonia in Mystery's End

How to Beat Non-smiling Agonia
Avoid the Water Missiles Cancel Out Her Invulnerability State

Avoid the Water Missiles

Non-smiling Agonia will occassionally call down water missiles from the sky. Try to avoid them by keeping an eye out for light blue circles on the ground, as these indicate where they will land.

Defeat the Enemies Linked to Her

Once you see several enemies around Non-smiling Agonia that are seemingly connected to her via white lines, be sure to kill all of them to remove her invincibility.

Mystery's End Rewards

The First Descendant Related Guides

Main Quest Walkthrough

All Mission Types

Kingston Missions

Sterile Land Missions

Vespers Missions

Echo Swamp Missions

Agna Desert Missions

White-night Gulch Missions

Hagios Missions

Fortress Missions