Press [Esc] before taking off. Type waterfall, and press [Esc] to enable cheat
mode and invincibility. Press one of the following keys to activate the
corresponding cheat function.
Mission skip Q
Double speed T
Disable cheat mode [F12]
Enter TQQQLOM or BQQQAEZ as a password and select "Start". Enter the password
screen again and use AAAAAAA as a password to start the first mission with five
or ten extra lives.
Enter HARDCASE as a password to play the game with decreased armor points.