- Kassandra: Your army needed a champion, and I responded. Easy.
I Need a Hero was a virtual representation of one of Kassandra's genetic memories, relived by Layla Hassan through the Portable Animus HR-8.5.
Kassandra met a Spartan commander after the Battle of Megaris.
Kassandra spoke to a Spartan polemarch.
("The commander's head is mine.")

Kassandra left to look for the Athenian commander. After eliminating him, she returned to the Spartan officer.
Kassandra helped the Spartans eliminate the Athenian commander.