Upon completion of the game, you will receive a final tally, showing you how well you did. The final tally includes your score, deaths, distance ran, coin rushes used, etc. The score you achieve through regular gameplay is not your final score. Your final score is calculated by taking your score and subtracting 100 points for every death and one point for every second it took you to complete the game. With this in mind, here are a few tips on how to get the best final score:
Leave no Stone Unturned: Though you lose points for time taken, its much more profitable to take the time to collect every coin and defeat every enemy you can. One coin is worth 10 seconds so if it takes less than 10 seconds to grab that one extra coin, you are profiting yourself.
Don't Farm Death: When you die, your score will revert to what it was when you originally started the level. You cannot cultivate extra points by dying repeatedly in a single level.
Strategy is Key: Your coin rush is a very useful tool. Save it for areas of high enemy traffic like where the flowers gather in 1-3.
Be Stylish: You can get extra points by jumping on multiple enemies without touching the ground. Try to take advantage of this as often as you can.