Sink 1000 boats.
Sink 10000 boats.
Protect the convoy and destroy 30 attackers.
Finish the Archaeological Hypothesis questline.
Sink 100000 boats.
Board 1 boat.
Board 100 boats.
Board 1000 boats.
Get Shaya to join your crew.
Get Lin to join your crew.
Get Aymara and Batir to join your crew.
Destroy the convoy at the last moment (at 95% progress or more).
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