Earn at least 10 kills on a run to earn the right to refuel!

Score 15 kills in one run or 30 without dying.

Score 25 kills in one run or 50 without dying.

Score 40 kills in one run or 70 without dying.

Score 50 kills in one run or 90 without dying.

Score 65 kills in one run or 99 without dying.