The main goal of the game is to defeat the Boss by pushing at him for billion times. But you can significantly reduce his health by using weapons, which appear in the form of bonuses. In order to get the weapon you will have to fight with his assistants. At the end of each fight, you can take a certain item from the defeated character. You can use won weapons only against Boss. Also by defeating some of the characters, you can get their abilities, which will strengthen blow against Boss.
At the end of a pleasant surprise...