This is the fourth stage of the game. There's quite a few trophies you'll likely earn during the stage. At the end you'll have to fight Monsoon, who is one of the more annoying bosses in the game. However using parries will eventually win the day.
In addition he can avoid attacks, apparently using EM grenades will temporarily stop him from using the dodge moves, but I beat this fight with out that trick. I would recommend it however but as I said this is an annoying fight and anything that makes it easier is worth using.