The Polynesia Add-on for Sid Meier's Civilization V has 10 achievements.
Win as Tahiti
Encounter Captain Cook
Find Easter Island in a random map game
Find Hawaii in a random map game
Find New Zealand in a random map game
Beat the game on any difficulty setting as Kamehameha.
Win as Hiva
Win as Samoa
Win as Tonga
Find Australia in a South Pacific map game