This is a walkthrough guide for The Cofounder Payphone Hit in GTA Online, a mission from The Contract DLC, is available. It covers all three assassination bonus variants, and shows exactly how to eliminate the target.
The target is always in a motel with a prostitute, and you can kill them as soon as they leave their hotel room. Or, you can opt to go for one of the following variants and secure the assassination bonus by completing the optional challenge.
Variant 1: Ignition Bomb
The first variant requires you to take out the target using an explosives modification installed on their car.
First, make your way to the target's hotel location. You will get a checkout timer at the bottom-right corner indicating the time before the target leaves their hotel room.
The target's vehicle is always an old rusty Mariachi Tornado.
Get into the vehicle, and drive it to the nearest Los Santos Customs. You will automatically get a waypoint to the closest Los Santos Customs as soon as you enter the vehicle.
At the Los Santos Customs, rig the vehicle with an 'ignition bomb' for $500.
After that, drive it back and park it in the same spot.
Now, wait for the timer to run out, and the target will come out of their hotel room.
As soon as they start their vehicle, an explosion will eliminate them.
Leave the area to complete this hit.
Wait for the target to sit in the vehicle and start throwing Molotovs at them.
Do not throw them before they sit inside and close the car door. Otherwise, they will start running away from the car and you.
When you throw the first Molotov, the chances are that the target will crash the vehicle, causing them to get stuck in a spot, making it easier for you to throw Molotovs at the car.
Throw a couple of Molotov, and the car will explode.
Leave the area to complete the mission.
Variant 3: Scoped Rifle Engine Shot
In the third variant, you need to use a scoped rifle to blow up the engine of the target's car while they are inside it.
When you reach the motel, you will get a white bag icon on your mini-map. This is the location of the scoped rifle.
It is usually found on rooftops around the motel. Climb up on the roof and interact with the bag to get your scoped rifle.
Now, wait for the target to check out and get inside their car.
