So hab ein paar Tipps und Tricks zusammengetragen leider auf englisch aber alle funktionieren weil ich es selber probiert habe:
Rescue Kabal and get his Hookswords
In the Wastelands, there are two doors that are covered with human bodies. One leads to the Elemental Warriors, the other is an area where Shokan warriors are throwing boulders at you. Go though the second door. Simply avoid the boulders and climb the ladders until you reach the top. There you will find Kabal inside a cage. Once he is freed, he will leave his hookswords as a sign of gratitude.
In the soul tomb portal, got to the area where you have to wall climb. You will see 2 paths. One leads left, the other right. The right path has a statue. Use fist of ruin and break it. Keep going and use the long jump ability across the gap and you will get him.
Unlock Johnny Cage
In the wu-shi academy where everything is burning. Go to the very right of the gate and jump onto the roof of the house. Run to the right and jump. If you did it correctly, you will be on a new platform with a boulder blocking your way.
In the MK2 arena level (right before the portal with the two statues in front of it) in the evil monastery, you will see many pillars. Jump on one of them which is half broken and then double jump onto the roof. You will find the secret there.
Unlock Mortal Kombat II (Arcade Game)
Unlockable How to Unlock
Mortal Kombat II (Arcade) Complete all 5 Smoke Missions
Unlock Sub-Zero and Scorpion
After taking the boat ride across blood lake, his VS. icon is in back of the lion looking statue to your left (facing the big door), just run along the wall and when you get to the end double jump and its yours.
In foundry follow the pathway downstairs to the left of the save station. Two archers will bust through the wall. Throw one at the wall to the left of the door way and it will bust open revealing a secret room full of lava and a ying yang on a ledge. Grab one of the archers and throw them in the lava. Then double jump off the guards back to claim the Scorpion ying yang for VS.
Contributed By: meltdown_snake
Unlockable How to Unlock
Scorpion in Story Mode Beat the game with Liu Kang
Subzero for single player mode and co op mode Beat the game once with kung lao
Unlockable Characters For Versus Mode
Finding Secret Orbs will sometimes net you a new character for versus mode.
Unlockable-----How to Unlock
Johnny Cage-----Second Level. Right after the first "Test Your Might" event, Cage's orb is directly above in a small roofed area.
Living Forest. Go to the section after the Brotherhood Of Shadow. Long Jump across the gap with the tiny waterfall. Go through the door. Now, get the Clay Statues to come to life. Destroy their shield. You only need 1 of them. Now, get one of them over near the Giant Stone Cloumn on the other side of the stream. It's the stone column right near where you entered. Throw the Clay Statue into it! It should come crashing down. Now, return to where the little waterfall was. There is no longer a waterfall. Just a Koin that contains Reptile.
Unlockable How to Unlock
Deadpool Use the ko-op switch in Reptiles Lair
Living Forest Use the ko-op switch in Reptiles Lair
Save Point Health Replenish
When you get to a save statue, press R2 to start praying and save. Your health bar gets fully replenished in single player mode. In Ko-op mode you have to press triangle to get out of saving and you can keep praying and exiting till you fill up your health bar for both Liu Kang and Kung Lao.
Easy 1000 Exp Points!
First obtain the combo ranking of "Toasty". Then immediately press the start button. The words "Toasty 1000" should appear in the middle of the screen and you will be awarded 1000 exp points. The best thing about this trick is, it works every time.
Contributed By: kaktwar
Fight Ermac, Kano, and Mileena!
To fight Ermac, you need the Fist of Ruin and Swing Ability. Go to Wu Shi Academy and go to the first area of it. Once you're there, look for the big red bridge. Before this, there is a split path. Take the one going over a chasm of spikes. On the other side is an evil Priest statue. Break it and head into the new area. Once you're there, jump onto the area to the left. Use swing to get to higher ground, then interact with the statue. The doors on the other side of the bridge in this area will open, and you will see the Warrior Shrine.
Go to the Warrior Shrine, and examine the statue on the left three times to fight...Ermac!
Near the end of the game, right before you fight the final three bosses, talk to Kitana three or four times. Destroy the guards that come into the room, then go through the new door to find...Kano!
In the first area of the Living Forest, use the swing ability on the two big branches that can be found above you as you head for the save structure. Swing over to higher ground, then climb up the ladder. You will be in a new area. Head to the other end of this treetop area to fight...Mileena!