Level 18515 is the fifteenth and last level in Bubblegum Hill and the 8021st mixed mode level (2621st jelly-order ). To pass this level, you must clear 27 single, 44 double jelly squares, collect 10 red candies and 10 yellow candies in 25 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.