The Clash in the Clouds Add-on for BioShock Infinite has 10 achievements worth 195 gamerscore.
Defeat all waves in The OPS Zeal.
Defeat all waves in Duke and Dimwit Theater.
Defeat all waves in Raven's Dome.
Defeat all waves in Emporia Arcade.
In CitC, unlock all Gallery items.
In CitC, get a kill with each weapon and vigor (except Bucking Bronco).
In CitC, knock an enemy off the city with Undertow, then rescue him, then knock him off again.
In CitC, use all eight different vigor combos to deliver the killing blow on an enemy.
In CitC, kill an enemy with splash damage by shooting a rocket out of the air.
In CitC, complete all Blue Ribbon Challenges.