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.
Congratulations! You obtained all of the trophies.
Join a raid with Constantine.
Unlock Order Mjolnir.
Unlock Order Zulfiqar.
Complete One Life mode.
Face the Order of the Bleeding Axe.
Unlock Chaos Winchester.
Master many deathblows.
Unlock Chaos Apollon.
Unlock the epilogue.
Unlock Order Dardanelles.
Defeat the Ouroboros Cypress.
Use three of the same Exemplar in battle.
Unlock Order Longinus.
Use two of the same Exemplar in battle.
Use the Psyche Devourer spell.
Choose Council of Princes cards 25 times.
Discover the secret in Styricaem.
Trigger break mode while fighting the final boss.
Complete the third act.
Unlock Chaos Zulfiqar.
Trigger break mode while fighting General Aurelius.
Unlock Order Winchester.
Trigger break mode while fighting the Crystal Golem.
Unlock Chaos Longinus.
Unlock Order Apollon.
Complete the second act.
Unlock Chaos Mjolnir.
Unlock Chaos Dardanelles.
Trigger break mode while fighting Micena.
Use the White Staccato spell.
Trigger break mode while fighting the Vandee Werewolf.
Rescue Princess Agnes in her time of need.
Earn a S-rank in a stage.
Choose Prime Legion cards 25 times.
Choose March Congress cards 25 times.
Find a celestial gem or an arcane gem.
Complete the first act.
Trigger break mode while fighting the Manticore.
Complete a 100-chain combo.
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.