The Arsenal Gear is a massive submarine armed with nuclear weapons. It is controlled by Solidus Snake, the leader of the Sons of Liberty, a terrorist organization. Raiden, the player character, must infiltrate the Arsenal Gear and stop Solidus from using the nuclear weapons.
The battle with Solidus is a thrilling and challenging fight. Solidus is a powerful opponent, and he uses a variety of weapons and techniques to defeat Raiden. Raiden must use all of his skills and abilities to defeat Solidus and save the world.
The destruction of the Arsenal Gear and the final battle with Solidus Snake is a memorable moment because it is a turning point in the game. It is the point at which Raiden finally defeats his enemies and saves the world. It is also a moment of great catharsis, as Raiden finally gets revenge for the death of his parents.