The The Last Stand Title update for Left 4 Dead 2 has 30 achievements.
As the Spitter, spit on a Survivor who is pinned by a Hunter.
As the Boomer, vomit on a Survivor without having direct line of sight with them.
Survive for 30 minutes on any official survival map.
Earn a gold medal on any official survival map.
With a sharp melee weapon, cut a Smoker's tongue before he ensnares you.
Survive The Last Stand campaign on Expert Realism.
Earn a silver medal on any official survival map.
Earn a bronze medal on any official Survival map.
As the Spitter, spit on a Survivor who is pinned by a Charger.
Instantly kill a Survivor as the Charger.
Survive The Last Stand campaign on any difficulty.
Destroy a Tank's rock in mid-air.
Revive an incapacitated teammate while a Tank is nearby.
Kill a pouncing Hunter with a shotgun.
Find the golden crowbars hidden in the Left 4 Dead 1 survival maps.
Destroy 20 gascans as the Spitter.
Rescue three Survivors from a single rescue closet.
Kill the Witch bride with a single shotgun blast on expert difficulty.
As the Hunter, land a 25 damage pounce.
Kill 20 Jockeys with the shovel or pitchfork.
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
Discover the hidden room in the Last Stand campaign
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.
Kill a Witch using only a sharp melee weapon, without anyone getting incapacitated or killed.
On the concert finale, survive until the helicopter arrives without leaving the stage
Complete The Last Stand campaign in 13 minutes or less, without any Survivors dying.