Peace Destroyer is the boss of zone H from Darius Force. It is shaped after a oarfish.
Peace Destroyer is the first battleship raid in the Darius series, later to be succeeded by Titanic Lance in Darius Gaiden and Queen Fossil/Fire Fossil in G-Darius. The boss promptly introduces itself after a very short shooting segment where you can power up and get some points.
In the first phase of the fight you fight the boss's head. It's mouth is the weak spot you must target, though it only becomes vulnerable when it is attacking. It's attacks include a mouth laser, a five-bullet spread, grenades which explode into bullets and homing missiles. It may also try to ram you, so be careful.
Once you destroy the mouth, you traverse the boss's insides. This segment works like a regular stage, where you avoid obstacles while shooting the turrets inside, though you must be careful since the boss continuously moves up and down. Once you reach the tail the final phase of the fight begins.
Your main target is the core on the back portion, though it only gets vulnerable after you destroy the four turrets protecting it. It only has two attacks, a double wave beam and a large straight laser.