Hybris


 CHEAT MODE:

 Typing 'COMMANDER' while the high score screen is being displayed
 will make you invincible and also enable these keys:

  [F7] - Activates super weapons (use [F1] to [F6]).
  [F8] - Advances a level.
 [F10] - Toggles cheat on/off.


 OPTIONS EDITOR:

 When you are promted to press fire, instead hit the [Spacebar] and
 an options screen will appear. Here you can alter the speed of enemy
 bullets with the mouse and keyboard.