Season X/Shadow757

Season X
Season X is a new story season that premiered on November 10, 2015. Each chapter's storyline is based on famous Marvel's storylines adapted in a new form.

Chapter Mastery
Each chapter has a number of requirements to be completed in order to fully master it. These requirements are:
 * Quest Progress Task Icon.png Quests (Tasks)
 * Deploy Task Icon.png Deploy Mission
 * Incursion Task Icon.png Incursion
 * Heroic Battle Task Icon.png Heroic Battle
 * Challenge Mode Progress Task Icon.png Challenge Mode
 * [[File:epic ic.png]] Epic Boss

Mastering all the requirements yields various rewards for the player.

Mission Difficulty
Each Missions, with a couple exceptions, now permanently set the difficulty to the Agent level when the Mission was first played and completed. This means that for example, a Level 100 Agent runs Mission 1 of Season X for the first time, the difficulty is permanently set to Level 100 even when the Agent has Leveled up since.

This change does not affect Premium Missions, as their difficulty is still set to the current Agent's Level. Missions that are set to Challenge Mode' are also not affected, as the difficulty is set to the current Agent's Level plus 10 Levels.