Half-Life 2 achievements

13.56%
Lambda Locator
Find all lambda caches in Half-Life 2.
17.58%
Keep Off the Sand!
Cross the antlion beach in chapter Sandtraps without touching the sand.
20.29%
Zombie Chopper
Play through Ravenholm using only the Gravity Gun.
20.65%
Hack Attack!
Kill five enemies with a Manhack.
21.12%
Flushed
Kill an enemy with a toilet.
23.57%
Vorticough
Discover the hidden singing vortigaunt cave in chapter Water Hazard.
24.13%
Counter-Sniper
Kill all of the snipers in City 17.
25.03%
Two Points
Use DOG's ball to make a basket in Eli's scrapyard.
29.17%
Atomizer
Disintegrate 15 soldiers by throwing them into a Combine ball field.
31.83%
Targetted Advertising
Pin a soldier to the billboard in chapter Highway 17.
33.46%
What cat?
Break the mini-teleporter in Kleiner's lab.
38.82%
OSHA Violation
Kill 3 enemies using the crane.