2005
Complete Chapter 4
2004
Complete Chapter 3
2003
Complete Chapter 2
2002
Complete Chapter 1
Night on the Beach
Go to the Beach with Neil (Alone)
Defiant
🔒 Hidden Achievement
Puttin' On a Clinic
Defeat the chopper in Episode Two without any misses.
Hot Potat0wned
Kill a Combine soldier with his own grenade.
Payback
Kill a Hunter with its own flechettes.
Cache Checker
Find every radar cache in chapter Under The Radar.
Gordon Propelled Rocket
Unlock the rocket launcher lambda cache in chapter Under The Radar.
Grave Robber
Steal a Zombine's grenade.
Bone Breaker
Kill 30 enemies with thrown physics objects.
Deadly Harvest
Kill an enemy by planting a hopper mine.
Live Bait
Help Alyx snipe 30 enemies in Episode One.
Zombie-que
Use flares to light 15 zombies on fire.
Car Crusher
Use the cars to squash 15 antlions in Episode One.
Pacifist
Contain the Citadel core without killing any stalkers.
Keep Off the Sand!
Cross the antlion beach in chapter Sandtraps without touching the sand.
Counter-Sniper
Kill all of the snipers in City 17.