'But you already have': With this, Shepard successfully convinces the Illusive Man that he's indoctrinated, and he commits suicide to prevent himself from harming humanity.

Assuming you met both of the requirements detailed in the list above, you can pick the Persuasion options below: The fourth choice is what determines the end of the confrontation. If you pick even ONE of the white options on the right-hand side, you'll be locked out at the very end.

Your work isn't done yet: you must also pick only the Charm and/or Intimidate options in this conversation.

If you consistently picked either all Charm or all Intimidate options in all three previous conversations, AND have a 100% full Reputation Bar, you'll unlock both Charm and Intimidate options in THIS conversation.

This scene is a culmination of your dialogue choices with him on Mars, Thessia and Cerberus Headquarters. When you enter the central chamber, you'll have the climactic encounter with The Illusive Man. Otherwise the way forward will be simple: head down the hallway full of bodies, through the door that opens, down the ramp, across the chasm, and then up into a central chamber.

Ems mass effect 3