Lui kang
Flying kick, fire blast low, fire blast
Press the D-pad towards your opponent and press Y X or A

Sub-Zero (adventure mode only) X, down, up, L, L, up, X
Scorpion (adventure mode only) X, up, L, R, left. Right, x
Mortal Kombat 2 X, Up, down, right, left, black

Complete smoke missions to get mk2 without cheating.and read the questuins answer me how do you find smoke missions

Scopion
At the main menu, hold White then press X, Up, L, R, Left, Right, X to unlock Scorpion in Single Player, Co-Op, and Versus modes

Sub Zero
At the main menu, hold White then press X, Down, Up, L(2), Up, X to unlock Sub-Zero in Single Player, Co-Op, and Versus modes.

When your playing multiplayer when you see your enemy knocked out
Like when his head is spinning go near him and hit the white button and it will say finish him.

Here are the fatalities that I know.

Lui Kang
Arm Rip Fatality: Press Down, Left, Right, Up, X. Bonebreak Fatality: Press Left, Up(2), Right, X. Dragon Fatality: Press Down, Right, Left(2), X. Fire/Kick Combo Fatality: Press Left, Right, Down(2), X. Flipping Uppercut Fatality: Press Up, Right, Down, Left, X. Headclap Fatality: Press Right, Up, Right, Up, X. Shaolin Soccer Fatality: Press Down, Left, Up, Right, X. Stomp Fatality: Press Left(3), Up, X. Kung Lao
Body Slice Fatality: Press Right(4), X. Buzzsaw Fatality: Press Right(2), Up(2), X. Friendly Rabbit Fatality: Press Up(3), Down, X. Head Toss Fatality: Press Left, Right, Left(2), X. Headache Fatality: Press Up, Down, Up, Right, X. Many Chops Fatality: Press Up(2), Left, Up, X. Mid-Air Slice Fatality: Press Up(3), Right, X. Unfriendly Rabbit Fatality: Press Left, Up, Right(2), X. Sub Zero
Freeze Shatter Fatality: Press Left(2), Down, Right, X. Frozen Uppercut Fatality: Press Right(2), Down, Right, X. Spine Freeze Fatality: Press Right, Down, Right(2), X. Reptile
Face Rip Fatality: Press Up(2), Right, Left, X. Head Eat Fatality: Press Left, Right, Left, Down, X. Hidden Chomp Fatality: Press Left(3), Down, X. Scorpion
Flame Fatality: Press Up(2), Down(2), X. Spear Slice Fatality: Press Right, Down, Right(2), X. Kitana
Head Chop Fatality: Press Away(2), Forward(2), X. Kiss Of Death Fatality: Press Right(4), Y. Jonny Cage
Decapitation Uppercut Fatality: Press Left(4), X. Punching Bag Fatality: Press Up, Left(3), X. Torso Rip Fatality: Press Down(2), Right(2), X. Baraka
Blade Lift Fatality: Press Down, Left, Right(2), X. Decapitation Slice Fatality: Press Left(4), X.

Up=u down=d right=r left=l white=w black=b

Fatalitys
Liu Kang:
Arm rip - d,l,r,u,x
Bone Brake Combo - l,u,u,r,x
Dragon - d,r,l,l,x
Fire/Kick Combo - l,r,d,d,x
Fliping Upercut - you,r,d,l,x
Head Clap - l,u,r,u,x
Stomp - l,l,l,u,x


Mutality
Liu Kang
Fire Trails - you,d,u,d,y

Brutality
Liu Kang
Rage Mode - are,u,d,d,b



Cheats
NOTE: all cheats have to be entered at the main menu after entering cheats you should hear a sound if not cheat was not entered correctly or I did not give you the right cheat.



Mortal combat 2 - hold w, then press x,u,d,r,l,b,x then let go of white
(may be left or right not trigger button)
Unlock Scorpion - hold w then press x,u,left trigger, right trigger,l,r,x now let go of w
(may be left insted of trigger button)
Unlock Sub Zero - hold w then press x,d,u,left trigger, left trigger,u,x now let go of white


Thats all for now folks hope I help you out some