How can I unlock reptile,goro,baraka,raiden by cheats ?

Sorry, but only reptile and baraka are playables and do not have cheat, goro and raidem can only by unlocking by action replay max.
TO UNLOCK REPTILE:
Follow the instructions below:
1 - go to the living forest.
2-go to the area where it has a large waterfall (the one you have to get on top of it.)
3-chord and destroy the shields of the soldiers statue using the circle button.
4 - back to the door where you entered this area (where the door just ahead of him have a fire.) Side of it you should see a river where snakes come out of it, behind the first snake, has a stone column, throw the statue up and press R2 to throw it there, after that the column will be broken.
5 - go to the room before that (which you find liu kang fighting zombies while raidem speaks with kung lao, reptile after being dead.) Look at the small waterfall in the river, a red coin will wait for you, it is the reptile.
BARAKA:
Follow the instructions below:
1-go to soul tombs.
2 - go on Red Room.
3-và somewhere on arriving at'wde has tarkatans and you have to climb the walls of skulls.
4 - When you go up the walls to the right and use the wall climb to destroy a statue that had fallen on the ground releasing a red coin (which is not yet baraka).
5 - use the path cleared by the statue to get the red coin that is baraka (it's hard to get to him because the ground is small but it is possible to achieve the first attempt).
I hope I have helped.
By secret master.