Challenges
Complete the optional challenges to earn more coins. Their objectives are usually to get headshots, perfect shots, or slowshots. The challenges must be done in one run. If you fail, you must restart from the beginning.
Headshots
Unless instructed to do otherwise, always try to headshot the goalie. After enough headshots against a particular team, you will be awarded with coins. The more heads you collect from a certain team, the more coins you will earn. When you do not have any time upgrades, use as much time as need to get headshots.
Teams
Upgrade your purchased teams with bonuses, such as more coins from scoring goals, or increasing the time available to shoot.