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