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