Here is the full list of all 8 AcChen - there are Tile matching the Arcade way achievements.
Score 2-points or more 35 times in a row.
Score 4-points 25 times in a row.
Get 10 Timer Bonuses in a Row.
Clear the board by NOT combining layers in level 36, 46 or 50.
Finish a level by picking a YinYang symbol when a YinYang is active.
Complete a bonus level.
Complete the game.
Get 15 time bonuses in a row.