Grow Defense: All Items and Achievements

• Defeat a Boss
• Unlock the Mage Tower
• Complete Round 200
• Reach Exp Level 40
• Have 1m Gold on you
• Stock up 50 Gems
• Finger Bang (click) 100 times
• Finger Bang (click) 100000 times – works easiest with constant click upgrade
• Complete your first research
• Complete 10 researches
• Max out rockets for Rocket Launcher
• Upgrade an item to 100
• Destroy Your First Megaboss
• Find your first legendary item (gold color, only from megaboss)
• Reach Mastery Level 3 (each 100 talents in a arrow damage or laser damage gets you a mastery star – spend 3 stars in all either in laser or all in arrow)
• Defeat 5 Unique Megabosses
• Max 5 Legendary Items

For the last achievement, each megaboss has a single digit % chance to drop a level 5 legendary item. To get level 100, you need 20 of each. The lowest drop rate is 1%, so [on average] expect to need to kill 2000 of them, or even up to 4000 of them. Respawn rate on the 1% is 90 minutes, so 2000*90 minutes is 125 days non stop. Expect this to take a couple of years of casual play checking 5x a day.

To be honest, those legendary drops should be more like 50%/40%/30%/20%/10%. All other achievements will be completed first. Spend your extra time by getting the rest of the items to level 100, and then disable their drops. That way you will always have a drop slot for megabosses.

There are six areas, four of which drop unique items, one that does a rehash of some of the first zone, and the megaboss zone. There is a chance to drop an item after every round. You can farm items in farm mode.

Items will fill up your inventory and will need to be merged to retain space. You can merge items by dragging them on top of one another, this will combine their increase their stats up to level 100. Most items drop at Level 1 (it will say 0), while others will drop at level 2. 2+2 = 4, so only 50 item drops for these will be required to hit maximum level 100.

The gems shop sells auto-merge upgrades for 2000 crystals. The first enables auto-merge every 30 minutes, the second is 15 minutes, and the third is instant. Auto-merge can not be turned off once enabled.

If you are going for the final achievement, five maxxed legendary items, then getting all three merge upgrades will be easily attainable on the way without paying to get there.

It is worth noting that items will not merge with those that are equipped.

Here are the items in their respective zones.

Island

• Lv 2 Explosive Torch, Explosive Damage + 5%, +0.03% per level
• Lv 2 Gold Banner, Gold +5%, +0.03% per level
• Lv 2 Experience Banner, Exp + 5%, +0.03% per level
• Lv 2 Wood Ring, Arrow Damage + 5%, +0.03% per level
• Lv 2 Bronze Ring, Health + 20%, +0.2% per level
• Lv 2 Pearl Ring, Finger Damage +5%, +0.03% per level
• Lv 1 Iron Ring, Critical + 5%, +0.025% per level
• Lv 1 Gold Ring, Gold + 10%, 0.1% per level
• Lv 1 Platinum Ring, All Damage + 5%, 0.1% per level (super rare drop)

Forest

• Lv 1 Piercing Torch, Arrow Piercing +7.5%, +0.075% per level
• Lv 1 Radius Torch, Explosion Radius + 7.5%, +0.125% per level (rare drop)
• Lv 1 Dual Banner, Exp and Gold + 5%, +0.03% per level
• Lv 2 Lightning Shield, Lightning Resist + 10% / HP + 10000, +0.15% and +150 per level

Mountains

• Lv 1 Fire Shield, Fire Resist + 10% / HP + 10000, +0.15% and +150 per level
• Lv 1 Dual Shield, Fire/Light Resist +10% / HP + ?, +0.1% and ? per level
• Lv 1 Blocking Shield, Block Chance +5% / HP + 20000, +0.05% and +600 per level (super rare drop)

Snow Peak

• Lv 1 Silver Ring, Crit Damage + 10%, +0.1% per level
• Lv 1 Ruby Ring, Laser Damage, +5%, +0.03% per level
• Lv 1 Emerald Ring, Experience + 5%, +0.1% per level (super rare drop)

Sky Zone

• Lv 2 Explosive Torch, Explosive Damage + 5%, +0.03% per level
• Lv 2 Gold Banner, Gold +5%, +0.03% per level
• Lv 2 Experience Banner, Exp + 5%, +0.03% per level
• Lv 2 Wood Ring, Arrow Damage + 5%, +0.03% per level
• Lv 2 Pearl Ring, Finger Damage +5%, +0.03% per level
• Lv 2 Bronze Ring, Health + 20%, +0.2% per level
• Lv 1 Iron Ring, Critical + 5%, +0.025% per level

Megabosses
If a drop is successful, it will tell you after the right

• (5% Drop) Slime: Lv 5 Midas Glove, Finger Damage and Gold +10%, +0.2% per level, clicking an enemy +25% gold
• (4% Drop) Ghost: Lv 5
• (3% Drop) Pig: Lv 5
• (2% Drop) Spider: Lv 5
• (1% Drop) Face: Lv 5

I have these legendaries already, can’t remember which megabosses dropped them:
Lv 5 Missile Banner, Explosive Damage + 10%, +0.2% per level, equips extra missile launcher