Missions can comprise of anything from defeating specific enemies, achieving a particular area, or finishing a baffle. Except for planned or generally straight missions, the player is allowed to investigate the game world as they see fit. Tricks made accessible as the player advances, can redesign weapons, flip the game world around into a perfect representation of itself, or give the player invincibility. After the game has been finished, the Hero Mode choice is made open, which, when obtained, enables the player to replay the game at a harder trouble level, however with all already opened tricks additional items still accessible....