After you've defeated shroud and killed him you saw a figure wearing alloy armour and a faceless mask. The figure walks up to you and takes off the Faceless mask revealing to be your friend you lost, may.

"Long time no see dear friend shadow, the gates are closed, so - you want more?" You want to take Titan's place, don't you? May got ambushed by your allies. Few weeks passes. "Did you seriously think your weak allies can hold me?" She stares at you with killer intent before laughing maniacally knowing damn well You're the prey.

(You're called shadow and you two are about to fight and she's superior than you in everything.)