Metal Slug: 1st Mission

Crash your Slug Flyer in Mission 10 - ''Night Flight''. You need to finish the Parachute Mini-game after the crash to go to Mission 13 - ''Invasion in the Sea of Trees''. Complete Mission 13 to play Mission 14 - ''Weapons Port''.

Complete the following Missions without going to Prison Camp:

In correct order:

Mission 0 - ''Emergency Mobilization''
Mission 1 - ''Hurry On''
Mission 2 - ''Slicing Through the Jungle''
Mission 3 - ''Battle in the City'' (Defeat Boss)
Mission 5 - ''Pursuit of the Transport Train''
Mission 6 - ''Penetration of the Front Base'' (Defeat Boss)

After successfully completing Mission 6, you will go directly to Mission 9 - ''Discovery of a Secret Passage''.

Go to the set up menu and change the button configuration so that you will jump with A. Have the game play by itself and the demo will do some unusual things.

Successfully complete the game to unlock an alternate version of the female character.

Successfully complete the game under the normal or better difficulty setting and obtain a rank of 23/23. Note: Some falls will still be harmful.

Jump on an opponent's head and immediately jump again to jump higher than normal.