The Agent 13 Challenge! is an Event Quest and the part of the Civil War Event. Requirements Edit Learn about Hydra Invaders! Defeat 4 Hydra Invaders! Retrieved from "https://avengers-academy.fandom.com/wiki/The_Agent_13_Challenge!?oldid=21286" Categories: Quests Event Quest Civil War Event Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.