Phone Interface
Using the computer mouse click on the D-Pad (Up, Down, Left, Right) to navigate Bill, or Solomon. Contra 4 uses an auto fire feature which allows the user to fire without pushing any buttons.

Key Pad Interface
Press D-pad Up, 2: Aim Gun up
Press D-pad Down, 8: Crouch
Press D-pad Left, 4: Move Character left
Press D-pad Right, 6: Move Character right
Press fire, Keypad 5: Jump
Press 0: Activate Grappling hook
Press *: Swap weapons
Press #: Drop down one level

Object of the Game
Guide Bill Rizer through the horde of Black Viper’s henchmen. Shoot flying weapon pods or weapon caches throughout the level to find special weapons. Using the new grappling hook, maneuver and avoid enemies in hard to reach areas. Be ready with all the firepower you can get, this will be a long fight.