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