Adams is the twelfth mission in Conduit 2. It's where the player begins the battle with John Adams.

The Mission

Upon returning to Atlantis, Andromeda informs Michael Ford that John Adams has breached the ship. Adams then emerges from the conduit and Ford fights him.

When it appears that Adams has been beaten, he reveals his true Progenitor form. Ford then tackles him through the conduit, taking the fight to Agartha.