Easy Way to Destroy Bees
Here is an easy way to destroy bees:  Wait to hear the buzzing sound that notifies you of  their arrival.  Then wait for them to
get very, very close to you (when they lower their altitude to hit you).  Use your weapon with star-type ammo to shoot them.
You will hit them 99.9% of the time.  If you shoot them and they hit you, you will not lose as much health as normal.

Fast Forward Text
When text appears press Z to fast-forward or A to skip it entirely.

Infinite Lives
At the title screen press L, R, B, A, Z, Left, Right.

Invincibility
At the title screen hold Z and press R, R, L, L, Up, Down, Left, Right.

Level Select
At the title screen hold Z and press Right, Down, Down, Right. Release Z and press Right, Up, Down, Left, Left, Up, Right,
Right to finish the code.

Refill Life and Ammo
While playing press A+B+R to restore your health and ammo.

Special Gun
On mission 6 there is a special gun you can get. First pick up the nuclear device and then while carying the device fly up
towards the mountains to a steel like drum. Fly over the drum and a special gun will appear and some ammo with it!