Here is the full list of all 20 WWE Legends of WrestleMania trophies - there are 2 bronze, 10 silver, 7 gold and 1 platinum.
Obtain all other Trophies
Obtain all of the medals in WrestleMania Tour Mode
Clear all "Relive" matches in WrestleMania Tour Mode
Obtain all of the medals in Legend Killer Mode
Defeat the Favorite Legends Tier in Legend Killer Mode
Max out a Created Legend's attributes
Win by using five or more reversals in a single match
Win using only grapple attacks
Win using a manager in an Exhibition match
Win using a Tag Chain Struggle
Win a 30-Man Royal Rumble
Defeat 10 opponents with a Created Legend in a single tier in Legend Killer Mode
Become a Legend Killer in Legend Killer Mode in 30 minutes or less
Obtain a medal in Legend Killer Mode
Have your Created Legend reach the Top rank in Hall of Fame Mode
Successfully perform a dive attack from all four corners
Win using a Chain Struggle
Obtain a medal in WrestleMania Tour Mode
Complete any match without pausing in the "Relive" section of WrestleMania Tour Mode
Make a Created Legend