Zoradius mini-game
Select "Extra Missions", "Boss Battle mode", and fight Vic Viper. Then pause the game while playing when your fighting Leo then press Up(2x's), Down(2x's), Left, Right, Left, Right, L1, R1. A sound will verify entry. The Zoradius mini-game will now be available when you return to the "Extra Missions" screen.

Different Extra Mission menu background
Finish every mission with the highest score.

Different ending sequence
Finish the game with an "A", "S", or "SS" rank to have new pictures after the credits available.

Different Zoradius ending sequence
Finish the Zoradius mini-game with a score above 570,000.

Zoradius mini-game: All power-ups
Pause the game while playing during Zoradius, then press Up(2x's), Down(2x's), Left, Right, Left, Right, L1, R1.

Different appearance
Finish the game to have more versions of Jehuty available.

Inhert
Finish the game and also save the game. Then instead of starting a new game, load your finished game file. Then go to where you enter the basement from the elevators. Then go to the second room prior to you fighting Inhert. Kill every enemy in this room. Go to the bottom of the room and to the second level of the moving pillars. Note: This is counting from the bottom upwards, this is the second to last level of moving pillars. When the pillars retract, go around the corners. The icon is at on one of the corners. You have to be close to the corner to find it.

Naked Jethuty
Finish the game and then save the game. Now instead of starting a new game, load your finished game file. Then go to immediately after the LEV battle where you have to go through two descending rooms. The icon is at at the end of the second room, in the area just before to the force field tunnel. Kill every enemy in the second room of the descending path, but do not go into the force field tunnel. Find the two openings right below the entrance to the tunnel that are guarded by lasers. Shoot the lasers and go in. Beat Naket Jethuty and grab the icon.

Versus mode
Finish the game to have versus mode available.

Auman Anubis
Finish the game and then save the game. Then instead of starting a new game, load your finished game file. Then go to the spot where you had to open two locks to open a gate. When you have the choice, move towards the left path. Find the Metatron on the far west side of the left path on your map. Go to the Metatron. There is a dead end behind it. Fly close to it and search for cracks on that wall. Shoot this part of the wall, then go into the tunnel that is uncovered. Beat Anubis and collect his icon to access Auman Anubis. Note: You will have to fight Nepthtis right after this battle.

Super power and unlimited subweapon power
After finishing the game, load your saved game. It should say "clear game" or something like that. The "New Game" screen will appear. Then choose Naked Jehuty and either still have your subweapons or not. When you are in Jehuty, you will be roughly ten times stronger than normal Jehuty and will have unlimited subweapon power.

Ken in tank top
You can have Ken to appear in a tank top for a brief amount of time. After you beat the Viola AI, grab Ardjet and go down by the lava for a time. Now she will start screaming and wiggling. Fly up to the end after you killed the enemies. In the intermission sequence where she jumps into Jehuty's cockpit, she will have a tank top on. She will also be wearing it while you are flying to the place with all of the booby traps prior to reaching Lloyd's palace.

Hints & Tips

Beating Anubis
Once you have gooten 0-Shift (either on a new game or replay), teleport away from him right away when he launches his red homing-lasers. Your range to him is not an issue they will not be able to track and will go away.

Beating Nephtis
When you come across Nephtis at the power plant on Mars, grab a solar panel on one of the towers. Then wait until she charges up her dash attack and guard with the solar panel. She will be stunned briefly. Attack her until she starts moving again. Then redo this until she is beaten.

When Nephtis's AI infects Ardjet, duck any of her long range attacks, then when she is done move into melee. Then wait for Ardjet to swing at you, then repel her attack by slashing at the proper moment. Repel the sword four times and she will become stunned. Now grab and hold her while ADA deletes the AI. Duplicate until she is beaten.

When you do fight Nephtis inside a giant force field, wait for her to charge up her dash attack. Then as soon as she attacks, run out of the way and she will hit the force field and become stunned. Then attack her until she breaks free of the force field. Duplicate this until she is dead. Note: Don't run into the force field while attacking her.

When Nephtis is inside the tower like area, use the Geyser to stun the Clods and grab them and then wait for Nephtis to attack. Now guard with the Clod and Nephtis will be stunned, attack her until she starts moving once again. If the Clod tries to break free use Burst to keep them from runing away.

Beating Nohman
When you come across Nohman after fighting Viola's A.I. Data, do not run up to him. Block his lasers if required to. Shoot normal lasers at him. When he teleports to you, you will know what has to be done.

Beating the Train
When your fighting the Train, you will have to destroy all the carts in five minutes. To ruin a cart, target its weapons and use homing missiles to demolish them. Once all of a cart's weapons are destroyed, it will explode and a fleet of enemies will now attack. Use Gauntlet to knock enemies into the walls and out of the way. The first and fourth cart have machine guns, the second has laser beams, and the third has machine guns and a massive laser cannon that is easy to dodge. The fifth cart is defenseless.

Beating Vic Viper in versus mode
If your opponent is playing as Vic Viper uses the morph to fly around, then use Anubis's 0 Shift attack to follow him. If he stops, attack until he is beaten. Do not do anything else because he is weak in that state.

Heal while carrying
Whenever you have to carry someone, you can heal them by simply using boost while carrying them. It uses up some of your SUB gauge, but you can use them as clubs.

Faster dashing
To dash faster than usual, hold R2 then press it even harder. Wait a moment and you will be dashing faster than usual.

Jehuty view while using Vector Cannon
You can really see a different view of Jehuty when your using the Vector Cannon. When your charging the Vector Cannon, rotate the view with R3. Note: Keep on moving or the view will change back to the first view.

Changing sub-weapons
You can also change your sub-weapon without going into menu. Then in a battle or outside a battle, tap L1 to switch back and fourth on your selected sub-weapon and grab. If you want to use another sub-weapon, hold L1 and choose it. Note: The game will pause when you hold L1, allowing you the time needed to switch sub-weapons.

Anubis: Extra attacks
When your using the Anubis or Aumaan Anubis in versus mode, rotate the Left Analog-stick counterclockwise to have Anubis hit its opponent eight times at least, depending on how fast you rotate it, instead of the normal four with its spear.

Anubis: 0 Shift in versus mode
To do the 0 Shift in versus mode, simply press L1.

Jehuty: Efficient burst attack
For numerous aiming of Jehuty's Burst, hold R2 + Left or Right to dash. Then while your dashing, hold Square to aim in every direction to get your target locked on. Then release Square, then fire. Note: The Burst attack is most effective when your destroying a swarm of Wisps or small projectile attacks.

Vic Viper: Special attacks
Press L1 and he will turn into his flying mode. It is roughly invincible against any character, even Jehuty.

While your playing as Vic Viper, press L1 to turn into the plane. Then, press R3 button to double the amount of whatever you shoot. You can do this four times only. For example, instead of just one energy ball, there can be five shots at once. Note: This trick will take down your health each time you use it, just like your shield.

Easy kills
If you have low health while your fighting enemies, get them close to each other then hold R2 and press Square. You should now be circling the enemies. Then, release Square.

Easy experience
When you do land on Aumaan, before you go into the core, you will be attacked by two Nephtus. The naked Jehuty can kill these easily with one hit and not be harmed.

When you do start the Deimos section, after Taper calls but before you get him, totally clear out the two accessible hallways. At least two sets of enemies will spawn in each hallway. You should gain at least level 2 experience before you receive Taper. After you get Taper, clear all accessible hallways and rooms in Deimos before you take him to the shooter. You should have 90,000 experience points by the time you take him to the shooter, and the last two sets of enemies on Deimos should push you up to level 3 experience. You could stay in Deimos longer and continue to destroy the re-spawing wall lasers, but the enemies' experience keeps going to lower the higher your experience gets.

Control scenes
When your playing the game in the story mode, in the scenes when you see Dingo talking with other characters while inside Jehuty, move the Right Analog-stick. As you move it, the picture of Dingo will move around and allow you to see around him.

In the scenes where you see Dingo talking with other characters while inside, press R2 to control other characters. Or press R2 again to control Dingo. Then use the Right Analog-stick to move the characters.

When you are listening to a conversation between the characters, use the Right Analog-stick to move Dingo's view inside his window to any way. You can do the same with another character's window by just pressing R2 and then using the Right Analog-stick. Then use the Left Analog-stick to switch your direction when you are in Jehuty's cockpit. Sometimes, by pressing R1 may enable you to zoom in during a scene, be it inside Jehuty or outside. You can zoom in more if you press R1 even harder.

Responding to comments
Just make sure that the game captions are on. This will help with the timing. Whenever either ADA, Ken, or Angie talks to Dingo, press either R3 or L3 and he will respond. This system can be useful in combat situations. For example, when ADA recommends switching to a particular sub-weapon, responding positively will end up in her switching to that weapon for you, without Dingo having to stop and do it himself. No response or a negative response in this case will keep things as they were. You can keep responding in some cases almost to the point of a short conversation. However, he does not seem to respond to Boss' comments. You must make your response while the comment is still on the screen this to work.

Better Moving Dash technique
When you are fighting, do your Moving Dash technique, but press Square hard. There will be more tiny blasts. This is effective when your fighting multiple targets, or when going against a swarm of Mosquitoes.

Wisp Technique
Once you have gotten the sub-weapon Wisp, you can drag and smash enemies or objects by holding Circle while your using Wisp on an enemy.

Easier BAHRAM fleet destruction
In the level where you demolish the BAHRAM ships, there is a way to do this without using the Vector Cannon. If you hit a part of the ship with a strong shot, part of the ship's armor will blow away. Destroy all of the outer armor this includes the tower on top of the bulkhead. That should destroy the ship.