All Working Metal Slug 3 Cheats - Playstation 2

Continue game play
After losing all lives except for one in arcade mode, press [Start] on controller two to continue the game using that player.

Completion bonuses
Successfully complete and save the game under the normal difficulty setting to unlock the "Chubby Isle Paradiso" (Fat Island) and "Storming The Mothership" (UFO) options at the main menu.

Stage 1: Hidden areas
Near the beginning of the first stage, you will see a submarine floating in a pool of water. Hold [Down] to walk into this area and hop into the sub to go to an underwater part of the stage. The next hidden area is at the part where the boat is located. Instead of getting on it, hop onto the ledge above it to find a secret hatch. Go inside to enter a cave-like part of the stage. Note: Every time you complete a secret area, you will go directly to the Crab Boss --- you cannot go in both hidden areas during the same turn.

Stage 2: Get Thunder Cloud
In the stage with the zombies, you can get the very helpful Thunder Cloud. Around the middle of the level, you will see a spot on a low area of ground where two prisoners are next to a man in a business suit. Hold [Down/Forward] to crawl down to this area and save them. Note: Enemies cannot get you down here. When you rescue the man in the suit, he will pull out a cell phone and call over two bodyguards with suitcases which contain a gold coin and the Thunder Cloud. To use it, just shoot your gun when the cloud hovers over an enemy.

Cure zombie or mummy status
To turn back from a zombie to a human, use the Med-Kit item found in enemies or boxes. To turn back from a mummy to a human, find the bottle of Holy Water found in enemies or boxes.