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There are 22 achievements in Half-Life 2: Episode Two worth (in total on the Xbox 360) 230 .

Picture	Name	Description
	Acid Reflex	Kill an acid antlion worker.	5
	Get Some Grub	Squish every antlion grub in Episode Two. Note: Loss of internet connection may interfere with this achievement.	20
	Piñata Party	Find and break every web cache in Episode Two.	5
	Into the Breach	Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.	5
	Twofer	Defeat both antlion guards outside the White Forest.	5
	Meet the Hunters	Survive the Hunter ambush with Alyx.	10
	Hit and Run	Run over 20 enemies with the car in Episode Two.	5
	Puttin' on a Clinic	Defeat the chopper in Episode Two without any misses.	15
	Cache Checker	Find every radar cache in chapter Under the Radar.	10
	Gordon Propelled Rocket	Unlock the rocket launcher lambda cache in chapter Under the Radar.	5
	Pedal to the Metal	Beat DOG in a race to the White Forest base.	5
	Little Rocket Man	Send the garden gnome into space.	30
	Neighborhood Watch	Save all buildings outside the missile silo from destruction.	35
	Payback	Kill a Hunter with its own flechettes.	10
	Gunishment!	Destroy the Combine cannon in the junkyard.	5
	Quiet Mountain Getaway	Survive the ambush at White Forest Inn.	10
	Secondary Silo Secured	Secure the launch doors on missile silo 2.	5
	Defense of the Armament	Save the missile silo from the Combine offensive.	20
	Deadly Harvest	Kill an enemy by planting a hopper mine.	5
	Hot Potat0wned	Kill a Combine soldier with his own grenade.	10
	Bone Breaker	Kill 30 enemies with thrown physics objects.	5
	Grave Robber	Steal a Zombine's grenade.	5