The FNIX Rising Add-on for Generation Zero has 12 achievements.
Use a melee weapon to blow up 20 cars.
Use a hunting or sniper rifle to destroy 15 Seekers.
Find all 20 "Survivor's Notes" and "Love Letters" Collectibles.
Complete the side mission "The Virus".
Complete the side mission "We are the Resistance".
Complete the side mission "In the Face of Adversity".
Complete the mission "Good Night".
Complete the mission "New Cycles".
Complete the mission "Test Run".
Complete the mission "Tidal Wave".
Defeat a Rival.
Free the survivor in the destroyed villa during the mission "The Ringfort".