The Vendetta Dilogy Add-on for RealRTCW has 20 achievements.
Find a secret area with gold in Vendetta campaign
Find a secret area with gold and rifle in Vendetta campaign
Eliminate first target in Vendetta campaign
Visit the secret room in Vendetta campaign
Eliminate second target in Vendetta campaign
Eliminate third target in Vendetta campaign
Eliminate fourth target in Vendetta campaign
Find your way into the sniper tower in Vendetta campaign
Find a secret area in Vendetta campaign
Complete Vendetta campaign on any difficulty
Find a secret area with a rifle in Vendetta 2 campaign
Find a secret area with a shotgun in Vendetta 2 campaign
Eliminate colonel in Vendetta 2 campaign
Find a secret area with necklace in Vendetta 2 campaign
Listen to your favorite radio station in Vendetta 2 campaign
Kill obsessed fanatics in Vendetta 2 campaign
Complete Vendetta 2 campaign on any difficulty