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