Complete the following tasks to unlock Vita trophy rewards.

Trophy	How to unlock
Architect (Silver)	Build 1000 towers.
Armorer (Bronze)	Make a complete improvement for 50 towers on the levels.
Builder (Bronze)	Build 50 towers.
Commander (Silver)	Kill 30,000 enemies.
Engineer (Silver)	Fully upgrade any tower in the store.
Gunner (Bronze)	Kill 1000 enemies.
Magician (Bronze)	Kill 500 enemies with spells.
Merchant (Silver)	Sell 500 towers.
Miner (Bronze)	Build 50 mines.
Ruthless (Bronze)	Kill 3 enemies with one spell.
Tactician (Gold)	Complete all levels to 3 stars.
Trader (Bronze)	Sell 50 towers.