Here is the full list of all 40 Atom Zombie Smasher achievements.
Rescue 10,000 scientists.
Launch 500 Llama Bombs.
Accrue 10,000 sniper kills.
Accrue 10,000 artillery kills.
Accrue 10,000 dynamite kills.
Accrue 10,000 landmine kills.
Complete a mission with 3 players.
Accrue 10,000 infantry kills.
Complete a campaign with the Hardcore and Permadeath modifier.
Destroy 50 Zed in one landmine explosion.
Get 100 landmine kills in a mission.
Get 100 dynamite kills in a mission.
Destroy 50 Zed in one dynamite explosion.
Use snipers to destroy 100 Zed in a mission.
Purchase a Llama Bomb.
Cleanse four Zed territories with one Llama Bomb.
Rescue 40 or more people in one helicopter pickup.
Unlock all the vignettes.
Complete a 20,000 point campaign.
Rescue 300 people in a mission.
Complete a mission under 30 seconds.
Complete a campaign with the Triplets modifier.
Complete the campaign.
Complete a campaign with the Alt. Spawning modifier.
Survive the night.
Defeat Wave 7 in the KringleJammer mini-game.
Rescue 200 people in a mission.
Get 100 infantry kills in a mission.
Have a merc reach Level 5 veterancy.
Complete a level-3 outbreak mission.
Rescue at least 100 people in July.
Rescue everyone in a mission.
Destroy a Mega Zed.
Complete a level-4 outbreak mission.
Get 100 artillery kills in a mission.
Destroy 50 Zed in one artillery strike.
Rescue 100 people in a mission.
Destroy all Zed in a mission.
Accrue 500 gold medals.
Rescue 100,000 people.