Grand Theft Auto IV Walkthrough

From Oleg's place, the GPS will take you on a brief route to a new location on the aforementioned Tulsa Street. This will be a really brief ride. For the record, you should find yourself a small, fast car, because the upcoming chase is epic, and will take some time. Small cars don't have the greatest physical integrity, but without one, you're going to have a hard time zipping in and out of traffic and keeping up. Regardless, when you arrive at your destination, a friend of Oleg's (your target) will alert him that he is being watched. And just like that, he zips off in his car.

The upcoming pursuit is a long one. Save your ammunition -- firing at him incessantly isn't going to work. You need to see this chase through to the very end. The game will alert you on-screen if you're about to lose him, which is a sign to you to step on the gas and get your ass in gear. His travels over the bridge are especially annoying, and you'll understand why you wanted not only a fast car, but a small car for this chase. When you've finally tailed him successfully for several minutes, start bumping him and force him to crash. When his vehicle takes enough damage, he'll surrender, staying in his car and begging for mercy. Show him none. Point a gun of your choice at him and eliminate him. Then, the mission comes to an end.