In the Grand Theft Auto IV mission A Long Way to Fall, an Italian mobster named Ray Boccino asks Niko to kill Teddy Benavidez in the Galveston Projects. Teddy is the easiest kill in the game. Just thinkinga about killing him is almost enough to get the job done.

• Watch the beginning cutscene.
  
• Proceed to the Galveston Projects.
• As you are driving there, Ray sends you a text with a picture of Alonzo. He is wearing a #72 sports jersey. Alonzo will be able to direct you to Teddy.
• Get out of your car at the projects.
• Locate Alonzo, the man with the sports jersey
• Speak with Alonzo to get the necessary information.
• Once you have finished with him, you have a choice to kill him or let him free. Be warned that if you let him go, he will call Teddy to warn him. 
• Enter the apartment building.
• Proceed to the elevator noted on your radar.
• Take the rightmost elevator up to floor #20.
• If you let Alonzo go, two of Alonzo's buddies will attack as soon as you exit the elevator.
• If you killed Alonzo, the same two will ask Niko if he is moving in.
• Kill both of them immediately.
• Exit the elevator room.
• Take cover.
• Shoot everyone as you progress to the staircase.
• Climb the stairs to the next floor up.
• Kill everyone there too.
• Keep going until you get to Apartment 151K.
• Break into the apartment.
• Get your weapon out.
• Shoot Teddy's bodyguards. 
• Walk through the apartment until you find Teddy around the corner.
• Chase him to the roof.
• Corner him up there at the edge of the building.
• It is easiest to knock him off the building and watch him fall to his death.
• Call Ray to finish the mission and earn your $8,500 reward. Successful completion also unlocks Taking in the Trash and Babysitting.