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