Here is the full list of all 13 Malicious Fallen trophies - there are 9 bronze, 3 silver and 1 gold.
Cleared "Rebirth" in Story Mode
Performed 7 Just Guards in a row
Cleared "The Slayer" in Story Mode
Performed a successful counterattack
Changed Garb
Defeated 1 boss
Performed a Chain of 200 or higher
Cleared "Demise" in Story Mode
Broke your own record in Online Mode
Cleared Story Mode on Normal Difficulty without using a Continue
Cleared "Pursuit" in Story Mode
Cleared "Demise" without ever using Forbidden Power
Defeated the Mantle of Malice on Normal Difficulty in under 5 minutes