Here is the full list of all 43 Shadow Gangs trophies - there are 32 bronze, 7 silver, 3 gold and 1 platinum.
Shadow Gangs Master!
Take the challenge
Finish the city level
Finish the bridge level
Finish the forest level
Finish the canyon level
Finish the cave level
Finish the subway level
Finish the factory level
Finish the train level
Finish the bamboo level
Finish the temple level
Complete the first mission and defeat the boss Collin
Complete the second mission and defeat the boss Jean and his robot Daddy
Finish mission III
Finish mission IV
Finish the last mission
Beat the first shoot bonus stage
Beat the second shoot bonus stage
Beat the third shoot bonus stage
Beat the fourth shoot bonus stage
Beat the first ninja bonus stage
Beat the second ninja bonus stage
Beat the third ninja bonus stage
Fourth ninja bonus stage beaten
Beat the fifth ninja bonus stage
Beat the sixth ninja bonus stage
Beat the seventh ninja bonus stage
Beat the eighth ninja bonus stage
Beat the ninth ninja bonus stage
Beat the tenth ninja bonus stage
City level hidden lives found
Bridge level pirate ship found
Find the cave treasure room
Find hidden Collin
Beat the fifth shoot bonus stage
Beat the sixth shoot bonus stage
Beat the seventh shoot bonus stage
Beat the eighth shoot bonus stage
Beat the ninth shoot bonus stage
Finish the game on Rising Ninja
Finish the game on Ninja
Finish the game on Crimson Ninja