South Park: The Fractured But Whole Guide — How to Kill Mom or Dad

In one of the final missions of South Park: The Fractured But Whole, titled “The Many Asses of Dr. Mephesto,” you will be given a hard choice: killing Mom or Dad.

Before making the choice, however, you first need to get to the DNA lab where your parents are confined. Then, based on your own judgment, you need to make the choice. That is unless you use this guide to tell you which of your parents to kill and how to do it.

How to Get to the DNA Lab in South Park: The Fractured But Whole

Before you can reach the DNA lab hidden deep inside the Dr. Mephesto’s facility, you will need to clear several rooms filled with dangerous foes.

First, you will arrive at Dr. Mephesto’s Genetic Engineering lab at the very end of the game. There you will meet Morgan Freeman, who will grant you a new fart that will ultimately let you change the day into the night.

As you enter the lab, you will face a horde of terrible cats that you must fight to move on. After you’ve defeated your wiley foes, you’ll need to move on to the next room, where a group of Mutant Sixth-Graders waits for you.

The next two rooms will reveal the evil plans of Mitch Conner (a.k.a. Cartman’s left hand), and another fight with some more Ass Mutants. When you’re done beating them, you will finally reach the DNA scanning room, where both of your parents are trapped.

What Happens When You Kill Your Mom or Kill Your Dad in South Park: The Fractured But Whole

As soon as you enter the lab, you will see that your dad is strapped to an operating table by what looks like a steel sheet. Your mom will be in the adjacent office bleeding all over the room. When you speak to Dad, he will tell you to kill Mom. When you speak to Mom, she will tell you to kill Dad

But no matter what they say, you need to kill one of them to move forward. Why? Because you have to put either Dad’s head or Mom’s arm into the DNA scanner to unlock the elevator, which will lead you to the next section of the mission.

How to Kill Dad in South Park: The Fractured But Whole

To kill Dad, you need to press the big red button on the bottom right corner of the operation table three times (shown in the picture above). Each time you press the button, he will try to persuade you to kill your mother instead.

If you press the button three times in the row, however, the mechanical laser will cut off Dad’s head. You can take the head and use it on the DNA scanning machine.

How to Kill Mom in South Park: The Fractured But Whole

To kill mom in TFBW, approach your her left arm and pull it three times. Every time you pull Mom’s arm, she will scream in pain and try to persuade you that you need to kill Dad instead.

If you pull her left arm three times, however, you will tear Mom’s arm off, killing her. After that, you can put her arm into the DNA scanning machine and move forward.

So Who do You Choose to Kill?

The truth is that the choice is completely irrelevant. Whether you kill your mom or your dad, the outcome will be the same. But you still must kill one of them in order to unlock the elevator.

So choose the parent that annoys you the most and continue on your mission.

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Hopefully, this guide helped you make the choice on which parent to kill in TFBW. If you’re looking for more tips, tricks, and strategies for The Fractured But Whole, be sure to check out other South Park guides here at GameSkinny:

• The Fractured But Whole Yaoi Locations
• The Fractured But Whole Black Screen Fixes
• The 5 Best Classes in South Park: The Fractured But Whole