There are 22 achievements in Half-Life 2: Episode Two worth (in total on the Xbox 360) 230
.
| Picture | Achievement | Description | |
|---|---|---|---|
| | Acid Reflex | Kill an acid antlion worker. | 5 |
| | Get Some Grub | Squish every antlion grub in Episode Two. | 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 |