Ground Zero

Starts automatically after the short chain of Faction missions in the Faction home cities; a chain begun by The Butterfly Effect (Dragon), No Sleep till Brooklyn (Illuminati), and London Calling (Templars).

After this foreshadowing of the Filth in Tokyo comes Weapon choices and practice, and a magical journey through Agartha to Solomon Island: Chaos Practice (Dragon), Training Day (Illuminati), and Might Makes Right (Templars).

A Legend is found here; although this mission is not repeatable, the Legend is not missable. "The Filth #1" can be accessed later on in the Mining Museum Basement in Kingsmouth

Faction representatives
One might suppose that the leaders of the big three "red, blue and green" factions would be the only ones allowed in Kaidan. From their conversation and appearances in promotional videos, it can be ascertained that Rose White was sent by the Templars, Mei Ling by the Dragon, Alex McCall by the Illuminati. But it is not until the Bee visits Venice that Arturo Arturo Castiglione reveals that he sent Sarah as a representative of the Council of Venice. If true, then the last team member might be from other similarly minor faction, such as the Phoenicians or Morninglight.

Tier 1

 * 1) Arm yourself with the shotgun.
 * 2) * Click the shotgun on the ground.
 * 3) Overcome the Filth.
 * 4) Move on through the gate.
 * 5) Defeat all the creatures on the platform.
 * 6) Regroup with the team.
 * 7) Proceed through the next platform gate.
 * 8) Kill the Filthy Mass.
 * 9) Cross the tracks alone.
 * 10) Heal the Orochi Security officer.
 * 11) * Target (click) the Orochi Security officer and use the green healing spell.
 * 12) Enter the battle against the Filth.
 * 13) Fight your way through the gate.
 * 14) Enter the last platform.
 * 15) Return to your own consciousness.

Tier 2

 * 1) Move around to regain your senses.

Rewards
No rewards.