When On The New Game/Load Game Screen, Press & Hold L1+R1 Then Push Left, Up, Down, X, Right, Triangle, Start Then You'll See A Code Display Entry Screen. Now Enter The Following Code Names To Turn On Each Code & It's Effect.

Enter The Word SUPERMECH To Gain Invincibility.
Enter The Word WHERESMAX To Gain All Models & Medal's.
Enter The Word WEWILLWIN To Gain Level Selection.
Enter The Word MULTIMAYHEM To Gain Multiple Player Levels.
Enter The Word SPACEFOLD To Gain Faster Refilling Of Your Gunpod Ammunitions.
Enter The Word MARSBASE To Gain Faster Refilling Of Your Missiles.
Enter The Word MIRIYA To Gain Faster Refilling Of Your Gunpod Ammunitions & Missiles.
Enter The Word BACKSTABBER To Gain One Shit Kill's On All Enemies.
Enter The Word SNIPER To Gain One Shit Kill's On All Enemies In Sniper Mode.
Enter The Word MISSMACROSS To Gain All Alternate Paint Schemes.
Enter The Word FLIPSIDE To Gain The Ability To Play The Game In Upside Down Mode.
Enter The Word CLEAR To Disable All Active Codes.

Go To The Options Menu, Then Click On Video Mode, Then Click On 480 Progressive Scan Then Press The Square Button & You'll Notice The Screen Will Turn & Stay Black But The Music Will Still Continue To Play.

When Selecting The Missions To Choose, Here Being A Listing Of All The Space Missions To Go To, To Make This Work Right. Chapters 1 "Hidden Agenda" & "Mutiny" Chapter 2 "Unwanted Guests" & Dark Skies" Chapter 3 "Catscan" & "Trial By Fire" Chapter 5 "To The Death".

When In The Veritech Selection Toggle The Armor You Have On By Pressing The Square Button.

Now When On Any Of These Space Missions, You Can Use This Armor In.

But All You Need To Do To Keep The Armor You Have In Non Space Missions Is Simply Beat A Space Mission & After You Beat That Space Mission To Press Continue After Beating That Level & You'll Then Be Able To Use Your Armor On Almost Any Level/Missions.

Jack AKA Wolf 10 Dies In The End, But You Do End Up Becoming Wolf Leader For It Among Other Things.