Here is the full list of all 12 Yu-Gi-Oh! 5D's Decade Duels trophies - there are 8 bronze, 3 silver and 1 gold.
100 wins in Tag Duel
200 wins in any mode
100 wins in Single Mode
Inflict at least 1 million total damage
Win a Tag Duel for the first time
Play a Tag Duel
Defeat Jack
Defeat Yusei
Save an original Deck Recipe
Win a Preliminary Tournament
Win and get a Rare Card
Play a single player game