The Shen's Last Gift Add-on for XCOM 2 has 10 achievements.
Beat the Lost Towers mission
Kill an enemy primed Derelict MEC before it can self-destruct
Promote a SPARK unit to Champion rank
Complete a mission with three or more SPARK units in the squad
Defeat an Avatar with a SPARK unit
A SPARK unit survives a mission it started with less than half health
Outfit a SPARK unit with the highest tier weaponry and armor
Hit three shots on a single turn with a SPARK unit after using its Overdrive ability
Defeat a robotic enemy with a SPARK unit
Build a SPARK unit