Scoring system
Everyone knows that you kill the other dragons before they kill you, but I understand that there is far more involved.
ROUND: This category is fairly straight-forward. The number of turns that elapse will determine your score for this sub category. The fewer number of rounds, the higher the score!
BLOOD: I actually have no idea what determines your score here. Possibly the amount of damage taken?
RATE: I believe this is is based off the coins that you get within the level. 1000 points per coin.
DAMAGE: This will increase as you destroy platforms/walls/buildings.
KILL: You get 2000 points per kill. Typically you will get full points for this category unless an enemy dragon kills another enemy dragon (sometimes they get in the way!)