Anubis: Zone of the Enders

After you get the WISP subweapon, grab Ardjet and take it down to the lava until Ken says something. Do this several times. Once you beat the current mission, Ken will have a new costume in the next anime cutscene.

Go to extra missions, go to boss battle mode, fight Vic Viper. Pause the game then press Up, up, down, down, left, right, left, right, L1, R1. When pressed correctly, you will hear a chime. Go back to extra missions, now Vic Viper should be a option

Whenever you see two people (EX: Ken and Dingo) during a cutscene (not the anime ones) you can move the camera with the right control stick. To move the other camera, hit R2. The left control stick moves the camera.

Provided that if you have Visual Works of Anubis, Pop the special demo disc into your PS2. In the main title, there is an option of 3 : New Game, Save, and Options.
Play through the demo, and after you clear the demo, you'll be brought back to the title screen. SAVE it.
Once saved, pop in your Original ZOE2 game again, and all Ex-missions and VS mech will be unlocked.
(NOTE: This only applies to the Japanese version of the game Anubis : Zone Of The Enders only. It will not work on Zone Of The Enders : The 2nd Runner)

To unlock Aumaan Anubis, clear the game once, and start the new game with all sub-weapons equipped, and try to get into Margrifier, the place where you have to unlock the gate....On the left route (always go left), there is a dead end along the way to the generator. Use Vector Cannon to blast the blocking stones to clear a secret path.
You'll be brought into the Wind Tunnel, fighting tons of enemies. destroy them, and you'll be brought into an unfamiliar location, where you'll have to fight Aumaan Anubis. Destory it and you will find the small icon of Aumaan Anubis, grab it and it'll be unlocked.