User blog comment:Master Sima Yi/Assassinews 25-03-'13 — Assassin's Creed IV: Black Flag gameplay trailer/@comment-78.146.200.205-20130330142112/@comment-5019018-20130330182242

The same way Revelations did: nonsensically.

Just kidding, they could do something similar to the original's, load up a specific sequence and be allowed to do whatever you liked.