Here is the full list of all 17 Grow Defense achievements.
Fingerbang the screen over 100 times
Defeat The First Boss.
Unlock the mage tower.
Complete round 200
Reach Experience Level 40
Have 1 million gold in your pouch
Stock up over 50 gems
Finger Bang the screen over 100000 times
Complete your first research
Complete 10 researches
Max out Rockets for the Rocket Launcher.
Max an Items Level
Destroy your first Mega Boss
Find your first legendary item!
Reach Mastery Level 3
Defeat 5 Unique Mega Bosses
Max 5 Legendary Items