Mortal Kombat

You only have to do one fatality per fighter, so using the fatalities in each character's "Move List" should net you this achievement. It must've been some HORRIBLE glitch, but this achievement didn't unlock for me until I performed the last fatality possible and the only one I hadn't performed (Quan Chi's Stage Fatality). All fighters have 2 Fatalities, 1 Stage Fatality and 1 Babality, so I've listed them all for us MK fans that want to see all the humor and all the gore!

Here is how you can perform the finishing moves:
- Fatalities can be done in Fatality Trainer, Arcade, Versus or Online.
- A Babality cannot be performed in Fatality Trainer.
- A Stage Fatality cannot be performed on Fatality Trainer.
- Stage Fatalities work on Living Forest, Pit, Hell, Street, Deadpool and Subway.
The Stage Fatalities can be done quicker by using a 2nd controller and going to Versus mode. At the character selection screen, hit the Y-button to choose a stage that a Stage Fatality can be performed on.

EDIT: I forgot to mention that while you can perform fatalities in Fatality Trainer, they will not count toward the achievement. In this case, the Fatality Trainer is for just that: training. BABALITIES DO NOT COUNT EITHER!

The 1st Fatalities can be found in your "Moves List" while paused.
Here are the 2nd Fatalities, Stage and Babality for all characters:
The distance in which you need to stand and face buttons are in parenthesis.
Remember that F = forwards, U= up, B = backwards, D = down and Block = RT.
Hold RT to keep from jumping on finishers that require you to hit up.
That is hold block, input finisher and quickly release block. It takes practice.

The fighters have been rearranged in alphabetical order for your convenience.

Freddy Krueger (DLC Kharacter):

Fatality 2 - D,U,F,B,Block (Sweep)
Stage Fatality - F,D,D,(A) (Varies)
Babality - B,D,F,(X) (Jump)

Rain (DLC Kharacter):

Fatality 2 - U,D,B,F,(Y) (Jump)
Stage Fatality - F,D,F,(B) (Close)
Babality - B,D,F,(X) (Jump)

Kenshi (DLC Kharacter):

Fatality 2 - B,F,D,F,(Y) (Jump)
Stage Fatality - D,F,D,(A) (Close)
Babality - D,B,D,(X) (Jump)

Skarlet (DLC Kharacter):

Fatality 2 - F,B,D,D,(B) (Jump)
Stage Fatality - F,B,F,(X) (Close)
Babality - D,B,D,F,(Y) (Jump)

Baraka:

Fatality 2 – F,F,D,D,(A) (Sweep)
Stage Fatality – D,D,D,D,(A) (Varies)
Babality – F,B,F,(B) (Jump)

Cyber Sub-Zero:

Fatality 2 – D,D,B,D,(X) (Jump)
Stage Fatality – D,D,U,Block (Varies)
Babality – D,B,F,Block (Jump)

Cyrax:

Fatality 2 – B,D,B,F,(X) (Jump)
Stage Fatality – D,U,Block (Varies)
Babality – D,F,B,(Y) (Jump)

Ermac:

Fatality 2 – F,B,F,D,(B) (Jump)
Stage Fatality – D,U,D,D,(A) (Close)
Babality – D,D,B,D,(Y) (Jump)

Jade:

Fatality 2 – B,D,B,D,(B) (Sweep)
Stage Fatality – B,F,D,Block (Close)
Babality – D,D,F,D,(B) (Jump)

Jax:

Fatality 2 – F,F,B,D,(A) (Sweep)
Stage Fatality – D,F,D,(X) (Close)
Babality – D,D,D,(A) (Jump)

Johnny Cage:

Fatality 2 – D,F,D,F,(B) (Sweep)
Stage Fatality – D,B,F,Block (Close)
Babality – F,B,F,(B) (Jump)

Kabal:

Fatality 2 – D,D,B,F,Block (Sweep)
Stage Fatality – D,D,(B) (Close)
Babality – F,D,B,(A) (Jump)

Kano:

Fatality 2 – D,D,F,B,(B) (Sweep)
Stage Fatality – U,U,B,(A) (Close)
Babality – F,F,D,D,(A) (Jump)

Kitana:

Fatality 2 – F,D,F,B,(A) (Sweep)
Stage Fatality – F,D,D,(A) (Close)
Babality – F,F,D,F,(B) (Jump)

Kung Lao:

Fatality 2 – D,D,F,B,(X) (Sweep)
Stage Fatality – D,F,D,(A) (Close)
Babality – D,F,D,(Y) (Jump)

Liu Kang:

Fatality 2 – D,D,F,D,(B) (Jump)
Stage Fatality – D,F,B,(A) (Close)
Babality – D,D,D,(B) (Jump)

Mileena:

Fatality 2 – B,F,B,D,(A) (Jump)
Stage Fatality – D,D,D,(X) (Close)
Babality – D,D,F,B,(Y) (Jump)

Nightwolf:

Fatality 2 – D,D,F,B,(X) (Sweep)
Stage Fatality – D,D,D,Block (Close)
Babality – F,B,F,B,(X) (Jump)

Noob Saibot:

Fatality 2 – D,D,B,D,Block (Jump)
Stage Fatality – F,D,F,Block (Close)
Babality – F,U,F,(X) (Jump)

Quan Chi:

Fatality 2 – D,F,D,F,(B) (Sweep)
Stage Fatality – B,F,D,(Y) (Close)
Babality – F,D,B,(Y) (Jump)

Raiden:

Fatality 2 – B,F,F,D,(B) (Sweep)
Stage Fatality – D,D,D,(Y) (Close)
Babality – D,B,D,(B) (Jump)

Reptile:

Fatality 2 – D,D,F,B,(X) (Sweep)
Fatality 3 – B,B,F,D,Block (Jump) – Klassic Kostume DLC
Stage Fatality – F,D,D,Block (Close)
Babality – B,F,B,D,(A) (Jump)

Scorpion:

Fatality 2 – B,F,B,(A) (Close)
Fatality 3 – D,U,U,(Y) (Jump) – Klassic Kostume DLC
Stage Fatality – F,U,U,(X) (Close)
Babality – D,B,F,D,(Y) (Jump)

Sektor:

Fatality 2 – D,D,F,B,(X) (Fullscreen)
Stage Fatality – D,F,D,Block (Close)
Bability – B,D,D,D,(B) (Jump)

Shang Tsung:

Fatality 2 – D,D,B,D,(Y) (Jump)
Stage Fatality – U,U,B,(X) (Close)
Babality – D,B,D,(A) (Jump)

Sheeva:

Fatality 2 – F,B,F,B,(B) (Sweep)
Stage Fatality – D,D,D,D,(X) (Close)
Babality – D,D,D,B,(B) (Jump)

Sindel:

Fatality 2 – B,F,U,(Y) (Sweep)
Stage Fatality – D,D,D,(X) (Close)
Babality – D,D,D,U (Jump)

Smoke:

Fatality 2 – B,B,D,F,(Y) (Sweep)
Stage Fatality – F,U,U,(X) (Close)
Babality – D,B,D,F,D (Jump)

Sonya:

Fatality 2 – D,B,F,B,(B) (Sweep)
Stage Fatality – B,F,D,(Y) (Close)
Babality – D,D,F,(A) (Jump)

Stryker:

Fatality 2 – D,F,D,F,Block (Sweep)
Stage Fatality – F,U,U,(B) (Close)
Babality – D,F,D,B,(Y) (Jump)

Sub-Zero:

Fatality 2 – D,B,D,F,(Y) (Sweep)
Fatality 3 – F,D,F,(Y) (Close) – Klassic Kostume DLC
Stage Fatality – F,D,B,(Y) (Close)
Babality – D,B,D,(B) (Jump)

More of a tip than a solution, but you only have to do ONE fatality for each guy if you need to check your progress.... Go to extras, Necropolis, and just check each persons stats to see how many fatalities you've done with them! Hope this helps =]

I found this acheivement easy in versus tag team match all you have to do is set up another controller then beat the pulp out of him you can do all your throws and x-ray attacks in this mode too, Then restart on the other controller and jump to the alt' charactor repeat the kick ass then back to charactor select to repeat the process with all charactors beware that some fatalitys are only activated in the right place, not too close, not too far. Good luck :)

All I did guys was played 2 player game one match did everyones first fatality and freaked out when I read all that you had to do. But it poped for me and I don't have everyones 2nd fatalitys unlocked or all babalitys done or stage fatalitys it must have glitched cause I did the challange tower and I was cyrax and I babalityed kabal and it poped.

The best thing to do would be to use another controller, go to versus mode; and also try to squeeze in the "e-X-cellent!" and the "The Grappler" achievement.
(For the purposes of this - go to options and change the rounds to win to 1)

First do both your forward and backward throws, then take charge of the other controller and beat yourself up (this is necessary, because your meter fills up faster when you're getting beat up. Once your X-Ray meter is full do the X-Ray attack. Then finish their health.

Once the finish him screen comes up, go to moves list, select your fatality and do it.

Also another quick note
Touching is when you're literally touching the opponent and theres no space between you and the opponent
Sweep is sweeping distance, where you would usually stand for a sweeping attack
Jump, is jumping distance, stand at touching distance and do one jump backwards.
Fullscreen is where you and your opponent occupy the full screen of your television.
Shouldn't take you more than 2 hours or so.

I'm just adding a tip to what everyone else said. I went through after not getting the achievement to unlock and went through the character list making sure to do everyone's number two fatality. I dont know if it makes any difference, but I originally didnt unlock this after combing a bunch of fatality number ones, two, and stage fatalities. When you go through the list do everyone's first fatality, second, or stage in a group. Don't mix and match them.

SIDE NOTE -also when going for achievment with two controlers in any mode beaides TRAINING(NOT COUNT), remember to sign in the second profile. Cuz i didnt, just presed start button to launch the game. Oviously had to do whole thing all over again. ;)