Here is the full list of all 20 Ty the Tasmanian Tiger (Windows) achievements worth 200 gamerscore.
Throw a 'rang
Complete Zone A rescue missions
Complete Zone B rescue missions
Complete Zone C rescue missions
Challenge a friend
Beat a friend in a challenge
Catch a turkey
Complete 100% of the game
Defeat 100 Frills
Collect 50,000 opals
Complete Dive Hard and Dive Harder missions
Defeat one of each type of enemy
Defeat an enemy with each of the elemental 'rangs
Post to a challenge leaderboard
Buy all six standard rangs from the Rang Store
Complete all Danger Arenas
Glide a total of 1,000 meters
Run a total of 10,000 meters
Win 50 challenges
Complete a Time Attack