The Enter The Dominatrix Add-on for Saints Row IV has 10 achievements.
Complete all five missions.
Kill the Dominatrix in 'Escape the Dominatrix'.
Destroy all the green polyps inside Paul in 'Pop His Top'.
Complete 'Meet the Dominatrix' without dying.
Kill Zinyak in less than 5 minutes in 'Save the Planet'.
Destroy all the rival pony carts in 'At the Races'.
Get 250 kills with the Minigun.
Get 100 kills with the Flamethrower.
Get 100 kills with the Grenade Launcher.
Spend 30 minutes with Raptor Ned as your homie.