Perform the following tasks in the Assassin Guild Challenges:
Signal Assassin Recruits during a fight twenty five times. Note: This must be done when Guards are actively fighting you. Use Arrow Storm fifteen times. Note: This is only available when you have three Assassin Signals. Twenty Assassin Recruits signaled to kill a target. Five Assassin Recruits signaled within a Core Memory. At least 5 recruits raised to the rank of Assassin (level 10).