The Isle of Sgàil Add-on for HITMAN 2 has 7 achievements.
Take the scenic route.
Select a Starting Location and use an Agency Pickup to smuggle an item into Isle of Sgàil.
Reach Isle of Sgàil Mastery Level 20.
Complete The Ark Society on Master Difficulty.
Trap Zoe in the effigy, strangle Sophia with the necklace, force the Constant to come quietly.
Complete all Mission Stories in The Ark Society.
Complete The Ark Society.