Activate the following cheats by entering the corresponding codes:
CHEAT FUNCTION - CHEAT CODE Full health - Press E + A + T. Note: The score will reset to zero after this code is enabled. Random weapons and items for current level - Press N + U + K. Alternatively, press D + U + K + M. Display message - Press G + O + D.
Unlock secret bonuses by performing the following tasks:
Destroy all cameras in the level. Complete the level without losing energy. Locate all weapons. Pick up all items. Destroy every cannon in the level. Destroy every bomb in the level. Destroy every crystal ball in the level without touching them.