The The Last Stand Title update for Left 4 Dead 2 has 30 achievements.
Kill a Witch using only a sharp melee weapon, without anyone getting incapacitated or killed.
Survive for 30 minutes on any official survival map.
Earn a gold medal on any official survival map.
Earn a silver medal on any official survival map.
As the Hunter, land a 25 damage pounce.
Rescue three Survivors from a single rescue closet.
Survive The Last Stand campaign on Expert Realism.
Kill 20 Jockeys with the shovel or pitchfork.
On the concert finale, survive until the helicopter arrives without leaving the stage
With a sharp melee weapon, cut a Smoker's tongue before he ensnares you.
Destroy 20 gascans as the Spitter.
As the Spitter, spit on a Survivor who is pinned by a Hunter.
Instantly kill a Survivor as the Charger.
As the Spitter, spit on a Survivor who is pinned by a Charger.
Earn a bronze medal on any official Survival map.
Kill a pouncing Hunter with a shotgun.
Revive an incapacitated teammate while a Tank is nearby.
Discover the hidden room in the Last Stand campaign
As the Boomer, vomit on a Survivor without having direct line of sight with them.
Survive The Last Stand campaign on any difficulty.
Destroy a Tank's rock in mid-air.
Find the golden crowbars hidden in the Left 4 Dead 1 survival maps.
Kill the Witch bride with a single shotgun blast on expert difficulty.
Survive for 10 minutes on any official map in Versus Survival.
Kill 53,599 infected. You made sure the dead won't rise anymore!
Escape Liberty Mall's Atrium before the first Tank appears
Earn a bronze medal on every official survival map
Earn a silver medal on every official survival map.
Earn a gold medal on every official survival map.
Complete The Last Stand campaign in 13 minutes or less, without any Survivors dying.