Here is the full list of all 32 Idle Zombies Clicker achievements.
Play for 100 hours
Buy 1000 upgrades
Earn 1B gold
Earn 10M gold
Buy 100 upgrades
Kill 10000 enemies
Defeat 1000 bosses
Complete 1000 levels
Complete the game 10 times
Defeat 100 bosses
Complete the game 5 times
Buy all helpers
Kill 1000 enemies
Complete 100 levels
Buy 50 helpers
Earn 100K gold
Buy 10 upgrades
Complete the game once
Buy 10 helpers
Defeat 10 bosses
Buy 1 upgrade
Kill 100 enemies
Earn 1K gold
Complete 10 levels
Defeat one boss
Buy 1 helper
Kill 10 enemies
Complete 1 level
Earn 10 gold
Kill 1 enemy
Play for 10 hours
Play for 1 hour