Timeline Survival

Travel across the timeline and defeat all bosses to acquire rewards in Timeline Survival.

## Introduction

Timeline Survival is seasonal content where Agents explore numerous timelines with a team consisting of specific heroes to fight bosses causing abnormalities.

[Reset Schedule] Every 14 days on Friday 1:00 a.m. (UTC+0) / 6:00 p.m. (PDT).

[Reset Items]: Available difficulty, participating hero HP, Survival Tokens.

When all the bosses have been defeated, the Timeline will be cleared immediately and Agents can move to a different Timeline. Agents can no longer explore the Timeline when less than three heroes are surviving. Agents may reset the Timeline or use Crystals to revive heroes.

* Please note that all survival effects will be deleted when a reset takes place.
* The HP of the heroes will be saved until the end of the season even if the Timeline is reset.

### How to Enter Timeline Survival

Enter Timeline Survival through Enter > Challenge > Timeline Survival.

### Building a Team

Agents have to select at least 3 heroes to enter Timeline Survival.

### Difficulty Selection & Unlock

The difficulty starts from Threat Level 1, and Agents can use Gold to select difficulties
that have been cleared in previous seasons right away.

## Timeline Survival Progress

When you finish preparing and enter Timeline Survival, your marker and the current <Main Icon> will be shown.

Temporal Energy is needed to explore Timelines.

* Agents can proceed one step at a time, and 1 Temporal Energy is used for each move.
* Temporal Energy recovers through a certain amount of time or can be acquired as rewards.
* Temporal Energy that has been acquired through rewards cannot exceed the maximum amount.

### Types of Timeline Features

Rank in each Timeline feature is distinguished by color.
Available Items and effects may differ based on rank.

### Battle Progress

Agents can view the stage information before entering the battle Timeline.
- Information on heroes who have advantages in the battle will be shown in the battle tips.

Proceed to the mission preparation screen by moving to the step using Temporal Energy.

* Energy and Boost Points are used when proceeding with stage battles.

3 heroes participate in battle at the same time.
- All stages support the Auto Play + feature.

* No skill cool down time and HP recovery effects are applied when tagging between heroes.
* The remaining HP of all heroes and enemies after a battle will be saved upon clear / fail.
* Heroes that have been defeated or ran out of battle time cannot participate in battles anymore.
* Heroes with a revive effect (Ex. Jean Grey, etc.) may revive once when the hero is defeated in battle, but their HP will be considered 0 after the battle and will not be able to participate in battles anymore.

### Reset & Revive with Crystals

Agents can no longer explore the Timeline when less than three heroes are surviving. Agents may reset the Timeline or use Crystals to revive heroes.

* Please note that all survival effects will be deleted when a reset takes place.
* The HP of the heroes will be saved until the end of the season even if the Timeline is reset.

## Timeline Survival Rewards

### Stage Reward

Clear stages to acquire Timeline Tokens.

* Timeline Tokens are used to make purchases at the Shop.

### Normal Reward

When entering specific locations, Items can be acquired without having to battle.

### Mission Completion Reward

Acquire mission completion rewards by clearing all the bosses in a Timeline.

* When all the bosses have been defeated, the Timeline will be cleared immediately and Agents can move to a different Timeline.