These are all the attacks that are in the game and it shows how to do these moves.
Goku(Base)(Kaioken)(SSJ)(SSJ2)(SSJ3)
1)Kamehameha -->+E
2)Spirit Shot <--+E(Base)
2)Super Dragon Fist <--+E E E E -->+E(Kaioken,SSJ,SSJ2 and SSJ3)
3)Spirit Bomb Up+E
3)Super Spirit Bomb (Base with SSJ or higher) Up+E Down+E
3)Warp Kamehameha Up+E(SSJ,SSJ2 and SSJ3
4)Transfrom into other form Down+E (Base only)
Teen Gohan(Base)(SSJ)(SSJ2)
1)Kamehameha -->+E
2)Maseko <--+E(Base and SSJ)
2)Soaring Dragon Strike <--+E(SSJ2)
3)Super Kamehameha Up+E
3)Father-Son Kamehameha Up+E E(SSJ2)
4)Transfrom into other form Down+E (Base only)
Gohan(Base)(SSJ)(SSJ2)(EKUA)
1)Kamehameha -->+E
2)Soaring Dragon Strike <--+E
3)Super Kamehameha Up+E
4)Transfrom into other form Down+E (Base only)
Vegeta(Base)(SSJ)(SSJ2)(Majin)
1)Galick Gun -->+E(Base and SSJ)
1)Atomic Blast -->+E(SSJ2 and Majin)
2)Final Impact <--+E E E E -->+E(Base)
2)Big Bang Attack <--+E(SSJ,SSJ2 and Majin)
3)Final Flash Up+E(Base,SSJ and SSJ2)
3)Final Explosion Up+E(Majin)
4)Transfrom into other form Down+E (Base only)
Trunks(Base)(SSJ)
1)Buster Cannon -->+E (Base only)
1)Finish Buster -->+E (SSJ only)
2)Shining Slash <--+E
3)Burning Slash Up+E (Base only)
3)Heat Dome Attack Up+E (SSJ only)
4)Transfrom into other form Down+E (Base only)
Krillen(Base)(UP)
1)Kamehameha -->+E(Base only)
1)Destructo Disk -->+E (UP only)
2)Sun Fist <--+E
3)Scatter Kamehameha Up+E(Base only)
3)Scatter Kamehameha Up+E E(Base only)
3)Fierce Destructo Disc(UP only)
4)Transfrom into other form Down+E (Base only)
Piccolo(Base)(FWK)
1)Destructive Wave(Base) -->+E
1)Light Grenade(FWK) -->+E
2)Maou Shot <--+E
3)Special Beam Cannon(Base) Up+E
3)Hellzone Grenade(FWK) Up+E
4)Transfrom into other form Down+E (Base only)
Frieza(FF)(100%FP)
1)Death Beam -->+E(FF)
1)Death Slicer -->+E(100%FP)
1)Death Slicer -->+E E(100%FP)
2)Death Wave <--+E(FF)
2)Death Crasher <--+E(100%FP)
3)Death Ball Up+E
4)Tranfrom into other form Down+E (FF only)
Android 18(Base)
1)Destructo Disc -->+E
2)Energy Field <--+E
3)Accel Dance Up+E
Cell(PF)(SPF)
1)Kamehameha -->+E(PF)
1)Death Beam -->+E(SPF)
2)Energy Field <--+E
3)Super Kamehameha Up+E(PF)
3)Warp Kamehameha Up+E(SPF)
4)Tranfrom into other form Down+E (PF only)
Kid Buu(Base)
1)Kamehameha -->+E
2)Assault Rain <--+E
3)Vanishing Ball Up+E
Cooler(4F)(5F)
1)Destructive Ray -->+E
2)Sauzer Blade <--+E
3)Supernova Up+E
4)Tranfrom into other form Down+E (4F only)
Broly(RSSJ)(LSSJ)
1)Blaster Shell -->+E
2)Gigantic Press <--+E
3)Gigantic Meteor Up+E
3)Gigantic Meteor Up+E E(LSSJ)
4)Tranfrom into other form Down+E (RSSJ only)
Gotenks(Base)(SSJ)(SSJ3)
1)Kamehameha -->+E(Base and SSJ)
1)Victory Cannon -->+E(SSJ3)
2)Galactic Donuts <--+E
3)Super Ghost Kamikaze Attack Up+E
4)Tranfrom into other form Down+E (Base only)
Gogeta(SSJ)
1)Big Bang Kamehameha -->+E
2)Soul Strike <--+E
3)Soul Punisher Up+E
Vegito(Base)(SSJ)
1)Final Kamehameha -->+E
2)Savage Counter <--+E
3)Spirit Sword Up+E
4)Tranfrom into other form Down+E (Base only)
Pikkon(Base)
1)Blazing Shoot -->+E
1)Blazing Shoot -->+E E
2)Hyper Tornado <--+E
3)Thunder Rush Up+E
Janemba(Base)
1)Hell Gate -->+E
2)Rakshasa's Claw <--+E
2)Rakshasa's Claw <--+E E E
3)Needle Mountain Hell Up+E
Enjoy,