Here is the full list of all 17 Jack Dragon and the Stone of Peace achievements worth 1,000 gamerscore.
Reach the enchanted forest stages
Reach the dusk stages
Reach the night time stages
Reach the castle stages
Get 20 gem chain bonuses in a single game
Reach level 10
Reach level 20
Reach level 50
Beat Lord Moneybags for the first time
Beat Lord Moneybags for the second time
Beat Lord Moneybags for the third time and complete the game
Get your name up on the high score table
Grab a freeze power-up
Collect all gems quickly enough to get a combo on every one of them in a single level
Reach level 60
Reach level 70
Reach the castle interior stages