Complete the following tasks to unlock Vita trophy rewards.

Trophy	How to unlock
Builder (Silver)	Build 1,000 towers.
Faithful payment (Gold)	Complete all levels with 3 stars.
Furious (Bronze)	Manually send 100 waves of enemies.
General (Bronze)	Kill 1,000 enemies.
Head Hunter (Bronze)	Earn 100,000 coins.
In the balance (Bronze)	Complete level when your castle has 1 HP.
Innovator (Silver)	Fully upgrade 200 towers.
Meat-grinder (Silver)	Kill 50,000 enemies.
Merlin (Bronze)	Kill 500 enemies with spells.
Seller (Bronze)	Sell 30 towers.
Tycoon (Silver)	Sell 500 towers.
Worker (Bronze)	Build 50 towers.