Keys, bombs, and other items become available as you progress, but no matter how strong you become, death remains a constant companion during this challenging journey. Isaac's initial attack is weaponized crying-meaning he can strike foes from afar by blinking out crocodile-sized tears in four directions. A boss chamber lies at the end of the maze and houses a gruesome fiend that Isaac must overcome before descending to the next floor. This floor and all subsequent floors are divided into single, connecting rooms that contain monsters or items.