In chapter 12: The Last Train you can get good cover. When you get where the Germans all run out the 1 building that`s where the cover is.Before you actually get there,is a building with an open door to your left, the last building to your left 'til you get there.Run in that house and go to the room with the window in it and fire away!When the Germans hop 'da fence just hop on the table and when you are hit the deck. NOTE: Do not go in that building where the Germans spawn,about 30 spawn at the same time,it's suicide!

Unlock All Stages
Go to the level select menu hold L + R and input UP, UP, DOWN, DOWN, LEFT, LEFT, RIGHT, RIGHT, BLUE, RIGHT, BLUE, RIGHT, BLUE.