Here is the full list of all 13 Black & White Bushido trophies - there are 2 silver, 10 gold and 1 platinum.
Complete all other trophies
Kill an enemy after teleporting above them 10 times
Play a 4 player Local Game 1 time
Kill an enemy just before they capture the flag 10 times
Get 300 points or more in Challenge Mode
Get 3000 points or more in Challenge Mode
Clash in Mid Air 10 times
Kill an enemy with a Shuriken from Screen wrapping
Get 10 kills while in the water
Slice up the Shark 1 time
Kill an enemy from Stealth Movement while in your own color
Get a double kill 10 times
Win a game of capture the flag without losing a flag