I had a look around and came up with this

Enter this :: To get/unlock this

R3 - R2 - R1 - L3 - L2 - L1 :: Steel-toe Boots
Circle - Circle - Circle - L1 - Select - Triangle :: Brass Knuckles
Square - R2 - Down - Down - L1 - L1 :: Get Bat
Down - Down - Select - Up - Up - L3 :: Get Knife
L1 - Cross - R1 - R1 - Select - R2 :: Get Machete
R2 - Circle - Select - Up - L1 - Right :: Get Pipe
Up - Select - Cross - Triangle - Triangle - Square :: Get Outta Jail Move
Down - Square - Cross - Select - R1 - Left :: Instant Win Level
Up - Triangle - L3 - Select - Cross - L2 :: Unlimited Health
Square - Circle - Triangle - Select - Cross - Left :: Unlimited Rage
Down - Square - Left - Cross - L1 - Select :: Unlimited Sprint
Circle - Circle - Down - R2 - L2 - Circle :: Unlock Advice From Bums
Up - X - Up - Select - L3 - L1 :: Cuff Drops
Triangle - Triangle - Triangle - Select - Triangle - R1 :: Uncuff Self
Left - X - X - R2 - L1 - Down :: Cuff Key Drops
Down - Left - Up - Up - Square - Right :: Flash Upgrade
R1 - R1 - L1 - R1 - L1 - Up :: Unlock Hobo Alliance
Right - R1 - Circle - X - Select - Square :: Unlock Weapons Dealer
L1 - Select - Square - Down - L2 - Right ::100% Completion

Hope that's good enough