The Apex Add-on for Arma 3 has 13 achievements.
Tried out Viper Special Purpose Suit.
Equipped any variant of the ADR-97 Weapon Pack ('Official Mod').
Drew at least one line on the map.
Visited the crown jewel terrain of Arma 3 Apex for the first time.
Completed each mission of the Apex Protocol campaign with the help of your teammates.
Completed each mission of the Apex Protocol campaign alone.
Completed each mission of the Apex Protocol campaign chronologically.
Completed the 04 Heart of Darkness campaign mission without alerting the enemy.
Loaded or unloaded 5 vehicles into any suitable transport vehicle.
Modified your difficulty options and saved the custom settings.