Here is the full list of all 21 Jewel Match Twilight achievements.
Complete 3 bonus games
Buy 5 items in the shop
Make a wallpaper screen
Make 8 combos in a row of match 4 or more
Make 6 combos in a row of match 4 or more
Make 4 combos in a row of match 4 or more
Have 10000 gold in the bank
Buy the strongest hammer
Have 30000 in the bank
Complete 10 bonus games
Gather 50000 pieces
Gather 100000 pieces
Solve level 120 in less than 10 minutes
Make 50 matches in 55 seconds
Make 10 matches in 10 seconds
Make 20 matches in 22 seconds
Buy all decorative items of a castle
Replay a level
Buy the bigger chest
Gather 30 stars by playing bonus levels
Gather 50 stars by playing bonus levels