Unlockables

Armed to the Teeth Finish 90 Abstergo Challenges
Arrr Matey! Finish 20 Abstergo Challenges
Celestial Navigation Finish 10 Abstergo Challenges
Dead Men Tell No Tales Finish 70 Abstergo Challenges
Deceased Crew Finish all 100 Abstergo Challenges
Loaded to the Gunwhale Finish 50 Abstergo Challenges
No Quarter Finish 30 Abstergo Challenges
Poseidon’s Will Finish 60 Abstergo Challenges
Scourge of the Seven Seas Finish 40 Abstergo Challenges
Shiver Me Timbers Finish 80 Abstergo Challenges