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