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