Here is the full list of all 12 Mahjong Gold (EU) trophies - there are 7 bronze, 4 silver and 1 gold.
Earn 100.000 points
Earn 30 stars
Complete the Lagoon stage
Complete the Shoal stage
Complete the Ridge stage
Complete the Reefs stage
Complete the Beach stage
Complete the Cave stage
Remove 1000 pairs of tiles
Use bonus 50 times
Achieve x5 index
Complete 30 levels with the highest score