PS3 = PlayStation Network Store. (Go to Game Add-ons --> Q-S --> SCIV)
I am unsure about Xbox.
Amy is in Soul Calibur iv, if that's what you're asking. She is also available as an unlockable bonus character in Soul Calibur 3
Yes,you get a versus 1 vs. 1 on Soul Calibur IV.
Soul Calibur IV has a 1 v 1 online option, ranked or unranked.
No, almost but no.
Because in SCIV the basis of the game is the crystal swords "soul calibur" and "soul edge". Crystals play a main part of the game, so they decided to make that the theme texture.
They increase the characters strength, HP, speed etc.
If you hit the Y and K buttons at the same time, you can use the force in Soul Caliber IV. This is done with the character Yoda.
beat arcade mode with yoda to unlock the apprentice or "star killer"
Soulcalibur IV had been released from July 31, 2008 on PlayStation 3 and Xbox 360.
Sorry about it, but you can only get a lightsaber with Yoda, Darth Vader, or the Apprentice. You can't get it with a character creater. It is a real bummer.
Every successful game will have a sequel. Look at final fantasy, they're on their 12/13th game now. *UPDATED* And on the note the producer of Soul calibur IV had an interview saying that there's a slim chance they WON'T make a squeal and as long as there's a demand they will make another calibur.
While there are no cheats in SoulCaliber IV, you can achieve unlockables in the game. If you clear a stage without being damaged, you can unlock the Soldier's Hat, for example.