Here is the full list of all 17 Dragon Mania Legends (Windows) achievements worth 200 gamerscore.
Collect 50,000 Gold from habitats
Upgrade the Academy to level 2
Feed a dragon to level 15
Beat the boss at ELIZA'S FACTORY.
Win 750 fights
Build 7 buildings or habitats
Clear 50 obstacles
Win 50 fight with a 3-star rating
Send dragon to explore the ruins 20 times
Score 5,000 Perfect Hits
Give gifts to friends 15 times
Train your dragon flawlessly 25 times
Collect 150,000 Food from your farms
Buy 25 dragons
Hire a Friend's dragon 10 times to win battles
Collect 3 Chronosian Seal Shards from Ruins
Finish the tutorial