Hit and Run
Not unlocked yetBreak out of the Combine prisoner transport vehicle.
Quaranta Giorni
Not unlocked yetEnter the Quarantine Zone.
Mazel Tov
Not unlocked yetPick up and smash 50 glass bottles.
Good Grub
Not unlocked yetFeed the snark.
On a Roll
Not unlocked yetInteract with the playground somehow.
Little Slugger
Not unlocked yetRepresent yourself with a specific prop on Russell's map.
Eye of the Geiger
Not unlocked yetMeasure Russell with the Geiger counter.
Mag-Snagger
Not unlocked yetCatch Russell's ammo magazine before it hits the ground.
Sustenance
Not unlocked yetReceive a tasty treat.
Freshly Squeezed
Not unlocked yetTest your grip on a headcrab heart.
Zombie with a Shotgun
Not unlocked yetCollect the shotgun.
Xen Garden
Not unlocked yetEnter the explosive Xen infestation.
Off the Rails
Not unlocked yetStop the prisoner transport train.
Checking In
Not unlocked yetReach the Northern Star.
Heart-Breaker Hotel
Not unlocked yetGet creative turning the power back on.
Surface Tension
Not unlocked yetEscape the underground pit.
Unbonded
Not unlocked yetCollect the SMG.
Cord-Cutter
Not unlocked yetShut down the substation.
Blast From the Past
Not unlocked yetDefuse a roomful of explosive barrels.
Sound Strategy
Not unlocked yetEscape the distillery without killing Jeff.
Flat Note
Not unlocked yetKill Jeff.
Crustacean Frustration
Not unlocked yetKill the annoying headcrab before it breaks everything.
Hold Your Liquor
Not unlocked yetCatch a bottle falling out of a cupboard before it breaks and alerts Jeff.
Sea Level
Not unlocked yetReach the aquatic exhibits.