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