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