Here is the full list of all 44 Fallen Legion: Flames of Rebellion trophies - there are 30 bronze, 10 silver, 3 gold and 1 platinum.
Trigger break mode while fighting Micena.
Unlock Order Longinus.
Choose Council of Princes cards 25 times.
Choose March Congress cards 25 times.
Trigger break mode while fighting the Vandee Werewolf.
Complete a 100-chain combo.
Unlock Chaos Dardanelles.
Rescue Princess Agnes in her time of need.
Choose Prime Legion cards 25 times.
Find a celestial gem or an arcane gem.
Complete the first act.
Trigger break mode while fighting the Manticore.
Complete a 50-chain combo.
Inflict over 9,000 damage without breaking the chain meter.
Deflect an enemy attack with a perfect block.
Perform a link attack.
Congratulations! You obtained all of the trophies.
Complete One Life mode.
Complete the second act.
Complete the third act.
Unlock the epilogue.
Trigger break mode while fighting the Crystal Golem.
Trigger break mode while fighting General Aurelius.
Trigger break mode while fighting the final boss.
Earn a S-rank in a stage.
Unlock Chaos Zulfiqar.
Unlock Order Zulfiqar.
Unlock Chaos Longinus.
Unlock Chaos Apollon.
Unlock Order Apollon.
Unlock Chaos Winchester.
Unlock Order Winchester.
Unlock Chaos Mjolnir.
Unlock Order Mjolnir.
Unlock Order Dardanelles.
Master many deathblows.
Use two of the same Exemplar in battle.
Use three of the same Exemplar in battle.
Discover the secret in Styricaem.
Join a raid with Constantine.
Face the Order of the Bleeding Axe.
Defeat the Ouroboros Cypress.
Use the White Staccato spell.
Use the Psyche Devourer spell.