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