Phantasy Star Online Episode 3: C.A.R.D. Revolution Cheats

Billy Hatcher Demo Tape
At the title screen, hold G + B on a keyboard to see a Billy Hatcher video preview.

Unlock dressing Room
Complete one offline story to unlock the Dressing Room. After using it once, complete the second offline story to unlock the Dressing Room permanently.

Unlockables
Complete the following Quests and talk to the respective Story Character to get the listed card:

Alive Aqhu from Viviana - Complete "Chance Meeting"
Broom from Relmitos - Complete "A Brief Rest"
Bullet Storm from Kylria - Complete "Info on Blitz"
Canadine from - Complete "Nostalgic Spot"
Cave Wind from Peko - Complete "Cake of Dreams"
Chain Sword from Saligun - Complete "Emotions Clash"
Companion from Creinu - Complete "Jewel Fountain"
Harisen Battle Fan from Glustar - Complete "Dream Present"
Madness from Orland - Complete "Test of Power"
MC Guard from Teifu - Complete "Tough Partner"
Mighty Knuckle from Hyze - Complete Song Request"
Pal Shark from Rio - Complete "Evaluation"
Pan Arms from K.C. - Complete "Looking Inward"
Punch from Rufina - Complete "The Real Me"
Round Slay from Reiz - Complete "Flashbacks"
Split Boost from Ohgun - Complete "Save the Rappy"
Territory from Stella - Complete "Great Rescue"