Here is the full list of all 13 Tiny Troopers Joint Ops: Zombie Edition trophies - there are 9 bronze, 3 silver and 1 gold.
Complete the Tutorial
Complete Soldier Campaign
Completed Spec Ops Campaign
All campaigns completed
Use an airstrike to kill 3 enemies at once
Earn 1,000,000 Command Points
Fully upgrade your squad
Revive fallen squad members 10 times
Lose the first mission in either Campaign
Zombie - Kill 100 zombie chickens
Complete Zombie Campaign
Zombie - Reach wave 10
Zombie - Reach wave 25