Successfully complete the game. You can now purchase 30 lives at the upgrade shop for 53 million CP.
573 Continues
Press Up(2), Down(2), Left, Right, Left, Right, A, B during game play in Arcade or Rising modes.
Contra music
Press Up(2), Down(2), Left, Right, Left, Right, B, A during the level 1 loading screen (and before it ends). The background music will change to a remix of the first level of Contra. The comment "Let's rock!" will be spoken to confirm correct code entry.
Extra life
Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play in multi-player mode after you lose your final life and your partner is still alive. You will resume with one last life in Arcade mode or two more lives in Rising mode.
Level 2: Unlimited CP
Get a plasma gun (H) and save it until the second mini-Boss. Go to the right side, charge the plasma gun, then crouch and fire towards the alligators and kill all of them. While doing this, shoot the gun horizontally at all bombs tat the helicopter drops to increase your combo. Fire vertically when a bomb falls overhead. Do not shoot the helicopter. You can build a 60 combo and get about 50 million CP before the combo meter stops. When you start earning negative points, intentionally lose your life, restart the level, and repeat the process.
Uprising R (30 lives) in Customization shop
Press Up(2), Down(2), Left, Right, Left, Right, click Left Analog-stick, click Right Analog-stick at the "Press Start" screen.
Various Achievements
Complete the following achievements to unlock Xbox Live Gamerscore points.
Achievement
How to unlock
All Clear ( 10 points )
[RISING MODE] Clear all missions.
Burning Spirit ( 10 points )
[RISING MODE] Achieve the highest rating on all stages.
Decorated Soldier ( 10 points )
[RISING MODE] Obtain all Star Chips.
Disposable Warrior ( 25 points )
[ARCADE MODE] Stock up 20 or more extra lives.
I'll make them pay... ( 30 points )
[ARCADE MODE] Clear all missions without dying.
Innate Guerilla Warfare ( 25 points )
[ARCADE MODE] Clear all missions without defeating more than 50 Privates.
Let's do this thing right! ( 5 points )
[ARCADE MODE] Defeat 10 or more Privates.
Stage Clear ( 5 points )
[ARCADE MODE] Clear Stage 1.
The Strongest Warrior ( 20 points )
[ARCADE MODE] Clear all missions.
The definition of a warrior! ( 25 points )
[ARCADE MODE] Clear all missions without picking up any weapon items.
World Peace ( 25 points )
[ARCADE MODE] Clear all missions with friends from around the world.
You can never play too much. ( 10 points )
[RISING MODE] Purchase all obtainable items at the Shop.
30 lives...