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