• 
  Drop to 0 lives and half a heart

Pause the game and hold A+B+UP+Start, then unpause.

 

• Exit Level

Press Start to Pause game-play. Then, press A(3) to return to the Channel Selection Screen. To change weapons, select "S" to enter the shop.

 

• Full Replenishment

Press Start to Pause game-play. Then, press Down + A + B + Start.