Enter This names into the cheats menu, you'll get 100 reward points.

NEWJACK - 100 reward points
THESOURCE - 100 reward points
CROOKLYN - 100 reward points
DUCKETS - 100 reward points
GETSTUFF - 100 reward points

The following are the combinations of Martial Arts Styles:

Cruiserweight Style - Submission + Kickboxing + Wrestling
Drunken Kung Fu 1 - Martial Arts + Wrestling + Streetfighting
Drunken Kung-Fu 1 - Martial Arts + Streetfighting + Wrestling
Jeet Kune Do 1 - Martial Arts + Wrestling + Submission
Kung Fu 1 - Martial Arts + Submission + Kickboxing
Muay Thai - Kixkboxing Kixkboxing + Streetfighting + Wrestling
Street Brawl - Martial Arts + Kickboxing + Wrestling
Street Brawl 1 - Martial Arts + Streetfighting + Kickboxing
Street Brawl 1 - Martial Arts + Kickboxing + Streetfighting
Street Brawl 2 - Martial Arts + Wrestling + Kickboxing
Street Brawl 3 - Martial Arts + Streetfighting
Street Brawl 4 - Martial Arts + Kickboxing
Technical Freak - Martial Arts + Submission
Tiger Claw 1 - Martial Arts + Streetfighting + Submission
Tiger Claw 1 - Martial Arts + Submission + Streetfighting

Codes For MH (All Cheats Work Once)

Completed Story Mode - STY572939
Unlock Eminem (No voice) - EMM512723
Machino Cap In SUS - SUS138658
Machino Cap 2 In SUS - SUS138654
Machino Cap 3 (Checkerd) At SUS - SUS138652
X's Junkyard Venue (Fight DMX) - HVU494656
DefJam Vendetta Venue (Fight Oldschool D-Mob) - HVU494652

LOYALTY - Afterhours by Nyne
MILITAIN - Anything Goes by CNN
BIGBOI - Bust by Outkast
CHOPPER - Chopshop by Baxter
CHOCOCITY - Comp by Comp
AKIRA - Dragon House by Chiang
PLATINUMB - Get it Now by Bless
GHOSTSHELL - Koto by Chiang
GONBETRUBL - Lil' Bro by Ricbyobyche
KIRKJONES - Man Up by Sticky Fingaz
RESPECT - Move by Public Enemy
POWER - Original Gangster by Ice T
ULTRAMAG - Poppa Large by Ultramagnetic MCs
SIEZE Sieze -the day by Bless
CARTAGENA - Take a look at my life by Fat Joe
PUMP - Walk with Me by Joe Budden
Baby Chris - Beat Baby Chris at 7th Heaven in story mode
Bless - Beat Bless at Syn Energy Powerplant in story mode
Bo - Beat Bo at The Foundation in story mode
Bone Crusher - Beat Bone Crusher at 7th Heaven in story mode
Bubba Sparxxx - Beat Bubba Sparxxx at The Pit in story mode
Carmen Electra - Beat her using your girlfriend at The Babylon Club in story mode
Carmen Electra - Choose Carmen as your girlfriend and beat your old girlfriend at The Babylon Club in story mode
Carmen Electra - Choose Carmen as your girlfriend and lose to your old girlfriend at The Babylon Club in story mode
Chiang - Beat Chiang at The Dragon House in story mode
Cindy J - Choose Cindy J as your girlfriend, then beat Nyne at The Babylon Club in story mode
Comp - Beat Comp at Syn Energy Powerplant in story mode
Crazy Legs - Beat Crazy Legs at The Terrordome in story mode
D-Mob - Buy him for 100 reward points in the 'Unlock Rewards' mode
D-Mob: Costume 2 - Buy him for 100 reward points in the 'Unlock Rewards' mode
D-Mob: Costume 3 - Buy him for 100 reward points in the 'Unlock Rewards' mode
Danny Trejo - Beat Trejo at The Limit in story mode
Elephant Man - Beat Elephant Man at The Babylon Club in story mode
Erick Sermon - Beat Erick Sermon at The Pit in story mode
Fam Lay - Beat Fam Lay at 7th Heaven in story mode
Fat Joe as Crack - Beat Crack at Club Murder in story mode
Flava Flav - Beat Flava Flav at The Terrordome in story mode
Freeway - Beat Freeway at Syn Energy Powerplant in story mode
Ice T - Beat Ice T at Club 357 in story mode
Jacob The Jeweler - Buy him for 50 reward points in the 'Unlock Rewards' mode
Joe Budden - Beat Joe Budden at The Babylon Club in story mode
Kimora - Choose Kimora as your girlfriend, then beat Nyne at The Babylon Club in story mode
Lauren - Buy her for 50 reward points in the 'Unlock Rewards' mode
Lil Flip - Beat Lil Flip at The Gauntlet in story mode
Lil Kim - Choose Lil Kim as your girlfriend, then beat Nyne at The Babylon Club in story mode
Ludacris - Beat Ludacris at 7th Heaven: Club DTP in story mode
Mack 10 - Beat Mack 10 at The Chopshop in story mode
Masa - Beat Masa at The Dragon House in story mode
Memphis Bleek - Beat Memphis Bleek at The Limit in story mode
Method Man as Blaze: Costume 2 - Beat story mode
Method Man as Blaze: Costume 3 - Beat story mode
N.O.R.E - Beat N.O.R.E at The Heights in story mode
Officier Jervis - Buy him for 50 reward points in the 'Unlock Rewards' mode
Officier Starks - Buy him for 50 reward points in the 'Unlock Rewards' mode
Omar Epps as O.E. - Beat O.E. at The Foundation in story mode
Pockets - Beat Pockets at The Babylon Club in story mode
Prodigy - Beat Prodigy at The Heights in story mode
Rome - Beat Rome at Syn Energy Powerplant in story mode
Scarface - Beat Scarface in The Babylon Club in story mode
Sean Paul - Beat Sean Paul at the Babylon Club in story mode
Shaniqua - Choose any girlfriend, then lose to Nyne at the Babylon Club in story mode
Shawnna - Choose Shawnna as your girlfriend, then beat Nyne at The Babylon Club in story mode
Slick Rick - Beat Slick Rick at Syn Energy Powerplant in story mode
Snoop Dogg as Crow - Beat Crow at Crow's Office in story mode
Snowman - Buy him for 25 reward points in the 'Unlock Rewards' mode
Solo - Beat Solo at the Babylon Club in story mode
Sticky Fingaz - Beat Sticky Fingaz at Red Hook Tire Co. in story mode
Sticky Fingaz: Costume 2 - Beat story mode
Suspect - Buy him for 50 reward points in the 'Unlock Rewards' mode
Teck - Beat Teck at Hunt's Point Scrapyard in story mode
Warren G - Beat Warren G at The Chopshop in story mode
WC - Beat WC at The Chopshop in story mode