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