Full list of all 30 SoulCalibur II HD Online achievements worth 400 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Xbox 360.
Unlock All the Achievements
Ten Thousand Hits
Obtained All Weapons in Weapon Master
Fought 10 Times in Online Mode
Won 5 Times in Online Mode
First Victory in Online Mode
Victorious in Sudden Death
Ten Victories in Extra Survival Death Match
Unlock All Characters
Became Lv 72 "Iron Edgemaster" in Weapon Master
Team Battle Cleared
Acquired Soul Calibur in Weapon Master
Five Successful Throw Escapes
Defeated 50 Female Characters
Acquired Complete Soul Edge in Weapon Master
Obtained New Costume in Weapon Master Shop
Purchased New Weapon in Weapon Master Shop
Became Lv 40 "Gold Mercenary" in Weapon Master
Twenty Perfect Victories
Defeated 50 Male Characters
Ten Ring Out Victories
Standard Time Attack Cleared
Victorious over Inferno in Arcade
Used Guard Impact against a Guard Break move
Three Successful Soul Charge Hits
Guard Impact Triple Success
Became Lv 6 "Platinum Neophyte" in Weapon Master
Ten Successful Counter Hits
Successful Guard Break
First Trial Point Cleared in Weapon Master