The How the Saints Save Christmas Add-on for Saints Row IV has 10 achievements.
Complete all three missions.
Find all the letters to Santa in the holiday missions.
Lick the candy cane barricade all the way through in 'The Fight Before Christmas'.
Ring all the bells in town in 'Miracle on 3rd Street'.
Complete all instances of Genki Holiday.
Find all the snowmen vignettes in the North Pole.
Deliver a present to Zinyak in 'The Santa Clawz'.
Find the present in a holiday mission.
Complete the holiday text adventure.
Complete all instances of Naughty and Nice.