I think this game is fun but needs a little rework. You dont really gain much from prestige, its faster to just farm all the achivements in one sitting. more balls and more colors on the bricks. make some golden or diamond bricks that only a million dollar ball can break etc.
This game need some changes. Its just to dull to farm 2500 coins when u get 1 for each enemy, the higher jumping ones should reward more and you should get a bonus depending on how far you get. maybe also 2-3 lives for each round.
To do the kings quest. Uncheck the auto attack button so no fight is taking place. go to the shop and press the kings quest square on your left. 50 levels. then the king. then something else starts named, your quest