Display Mission Stats
To display your mission stats, press 8 while playing.
Turnabout is fair play, so speed your turns by pressing A + C while turning.
At the Options screen, press 6, 8, 2, 4. The screen border will flash and you can now select an Insane difficulty level which is more challenging than Hard.
Level Select and All Weapons
At the Options screen, press 3, 7, 6, 6, 8, 2, 4, 2. The screen border shimmers if the code is entered correctly. When you begin the game, all 16 missions are selectable and all weapons are available.
Relive your college days with this code. At the options screen, press 2, 8, 8, 8, 6, 6, 7, 7, 3, 7, 7. While playing, press * to fail the current mission or # to pass. If only finals were so easy!
If you're low on energy and need a repair, hit yourself with a cruise missile.
Important: do this only during the low energy warning or you'll need more than repairs.
For a slow motion view of the action, pause the game and hold 1 + 3.
Swivel Mech View
In the mech configuration screen, select Add Weapon or Remove Weapon then press 1 or 2 to swivel the mech.
It takes a lot of ammo to keep a soldier happy. For a limitless supply, press 2, 7, 2, 8, 3, 7 at the Options screen.