After Paul is defeated, he drops his Molotov cocktail and ignites himself. As he lies on the floor burning, Frank extinguishes him with a nearby fire extinguisher. There's a fire extinguisher nearby, close to Paul's head next to the shelf of clothing. Put the fire on Paul out with the fire extinguisher. If needed, a second one is in the closet of the store where Mindy and Debbie are. Paul is the only psychopath that Frank can rescue.Don't use first person mode to try and put Paul out, as Frank will only throw the fire extinguisher at Paul. When Frank puts the fire out Paul will be at less than half health.
If Paul dies, take a photo of him for part of the Psycho Collector and Psycho Taker achievements. Whether Paul dies or not, Frank will get the "Psychopath Defeated" bonus of 30,000 Prestige Points.
After the fire has been put out, Paul apologizes for his actions and Frank offers to bring him to the Security Room. He is able to free and calm Mindy and Debbie from the closet, and they follow Frank to the Security Room as well.
Frank can trap Paul in the store and hit him with a melee weapon. Try to hit Paul with a melee weapon a few times as he runs past Frank for the open mall area. If Frank defeated Adam the Clown, the small chainsaw is very effective; Paul will go down with a few swipes and Paul will not even have the chance to leave the store.
Paul also has remote controlled car bombs when he is a distance from Frank.
Paul will also occasionally run out of breath while running, making another good time to shoot him or hit him with a lead pipe or other melee weapon. Repeat this a couple of times to defeat Paul.
Paul's main method of combat is running. One guide suggests to not simply chase right behind him. Paul will drop pipe bombs while running away from Frank which will certainly hit Frank if he follows Paul. Instead, when Paul runs, pull out a firearm and shoot him. The zombies that get in the way will be blasted by the dynamite, so there's not much need to pay attention to them.
If needed, there are several police zombies with guns near the top of the stairs next to the store where the fight begins. Paul is not that hard as long as Frank avoids chasing him. Also use firearms to shoot the Molotov cocktails out of Paul's hands as he lights them, causing them to explode and damage him in the process.
With a sniper rifle Frank can get on top on one of the Beautification or
Fine Cut makeup counters and shot at Paul without worrying about him or the zombies.
In the alternative, the official guide states the best way to defeat Paul is to have a good melee weapon and continue to stay on Paul's tail, chasing him down as he runs away. If Frank stays in constant motion, running to the right or left of the fleeing punk and giving his tossed pipe bombs a wide path, he can pass by the exploding bombs unharmed.
Frank can also jump kick Paul or hit him with a melee weapon when he tries to change directions.
Occasionally Paul will turn around, light a Molotov cocktail, and throw it at Frank. This is the time to attack; just sidestep the cocktail, then hit Paul with a melee weapon while he recovers from the throw.
There are two Photo Ops available for Paul. The first one occurs when Paul successfully hits Frank with a Molotov cocktail. The second is when Paul's crotch is on fire.
There is a minor glitch where Mindy and Debbie die if you enter Wonderland Plaza, leave, and don't activate this scoop. Mindy and Debbie will lose health and die like every other survivor, but this scoop remains active. If the scoop is activated later, Mindy and Debbie will still show up in the cutscene and the fight with Paul will commence. However, when the cutscene ends, Mindy and Debbie will still be dead.
If Frank defeats Paul and then speaks to Mindy and Debbie without showing their health bars they will join Frank's party but immediately die.