Also of importance is the player's bunker, in which the player begins each life. The bunker is a safe zone and the player is impervious to damage while inside, though the more advanced robot adversaries have the firepower to destroy this safe haven.
The player's bunker, which marks the beginning of each life, is crucially important. It serves as a protected zone where the player remains invulnerable to damage; however, it can be breached by powerful enemy robots.