The Dissonance of the Nexus Add-on for Sword Art Online: Fatal Bullet has 13 achievements worth 195 gamerscore.
Meet up with Sachi.
Shut down the snowmaker.
Defeat the Snowstorm Queen.
Defeat the Freezing Menace.
Receive mail from an unknown sender.
Defeat Snowstorm Ereshkigal on Extreme difficulty.
Defeat Cocytus Nifta on Extreme difficulty.
Complete 15 types of Party Hero Quests.
Obtain one of the weapons added in "Dissonance of the Nexus."
Collect all Emblem Earrings and create a School Uniform F.
Craft a Chic Dress F.
Have sleepovers with Yuna, Eiji, and Seven.
Have a sleepover with Sachi in Kirito Mode.