Here is the full list of all 9 Crowalt: Traces of the Lost Colony achievements.
Find out what happened to the Lost Colony.
Don't tell Ozkanuguro anything about voodoo.
Find out who is responsible from Ghost's suffering.
Find the hidden tablet.
Tell Russ that Margaret accepted the love letter.
Change the direction of weapons that aim staghead.
Beat the pirates in Five Finger Fillet.
Bartend succesfully (!) until Riley gets back.
Don't mix beggar's drink any water.