En gros pour avoir tout les trophées il faut:
Faire tout les niveau , faire un code, faire un multijoueur et completer les 2 bestiaires
Combo: First Blood – Bronze
Complete your first combo.
This requires you to match two chains in a row. You should have it obtained by the end of the tutorial.
It's Alive!
Create your first monster.
Badman helps you with your first monster creation during the tutorial.
Villainy Loves Company – Bronze
Complete a stage collaboratively.
This requires you to link with another Vita using the ad-hoc local wireless. The person that you are linking with must have completed the tutorial stages in order to unlock the multiplayer function. Simply create a room and pick the simplest stage for an easy Trophy.
The Cool Army Code - Hidden Trophy - Bronze
Input the secret command.
When you complete the game, you will be told to press LRLRLRLRLR on the title screen, which unlocks more levels. You can input the code before completing the game, but it will do nothing.
Onederbar! – Bronze
Complete Stage 1-8.
Follow the road map to create your almighty army and clear the stages.
Two Much Too Young – Bronze
Complete Stage 2-8
Simply clear the levels.
Easy Threesy – Bronze
Complete Stage 3-8
Simply clear the levels.
All Fours – Bronze
Complete Stage 4-8.
This is the point in the game where you will have to start going to previous levels to grind potency. Play varied levels to help on the way to your Heropedia.
High Five! - Bronze
Complete Stage 5-8.
Simply clear the levels.
Six of the Best – Bronze
Complete Stage 6-8
Simply clear the levels.
Seventh Heaven – Bronze
Complete Stage 7-8.
Simply clear the levels.
Something I Eight – Silver
Complete Stage 8-8.
Normal monsters won't cut the chase in this stage, with special monsters advised. Monsters with special abilities such as poison, paralysis, and sleep will help more than raw power, so make sure that you have a varied team. Try to match near an unbreakable block to help clear the lining walls at the beginning of the stage. The final hero's special move will make half of the field turn into unbreakable blocks, so make sure that you combo well to not waste any precious moves. If it gets too hairy, don't be afraid to use your underhand items to give yourself the upper hand as you have been saving them for this moment. Be warned that you can only use the Flux Capacitor to rewind time once, so if you're not dealing enough damage, try changing your monster lineup.
Complete Completion – Hidden Trophy – Silver
Complete Secret Stage 8-8.
Input 'The Cool Army Code' after completing the game to unlock the secret levels. Complete the final stage with this increased difficulty to get your Trophy.
Know Your Enemy – Silver
Complete the Heropedia
This requires you to obtain every hero in the game. Keep repeating levels until the rare or super rare hero you are missing shows up. Make sure to make use of your Charming underhand item to nab super rare heroes and shave hours off your grind. This will require time and patience.
Numbers of the Beasts – Silver
Complete the Monsterpedia
This Trophy will more than likely take the longest to get. The Monsterpedia will show you how many evolutions a creature has, so you won't find yourself on a wild goose chase. While completing the Heropedia, you will end up discovering where all of the unique heroes that are needed to transform your creatures are. Keep maxed out versions of basic monsters on hand, so when you obtain new heroes, you can see if you can get something new. Make sure to keep visiting your Mine to obtain plenty of monsters – especially ones that can't be obtained through evolution.