When playing Tap Defense you have to not only employ an overarching strategy, but also know when to apply certain techniques to maximize your effectiveness. Though you may focus on different strategies, such as the effective Arrow Defense Strategy, you will also need to use other elements to your advantage. Since we know that there are forty three levels in Tap Defense we have know that we simply need to survive up until that point. That means that once you get to this final level you need to do everything you possibly can to stop as many enemies as it is viable. One way to help ensure this is the sell off method.