Playable

A veteran of the Balkan wars who arrives in Liberty City on his cousin's promise of a mansion and finds a cab office and a debt. He stays because the man who sold out his unit is somewhere in the city.
All 90 missions · 2 as giver
GTA IV
38of 90
Mission 38 of 90Story mission
The last of Francis's contracts is a sniping job with a problem in it: the target will not come outside. Niko takes a rooftop above the dealer's apartment off Denver Avenue and has to draw him into the open before the rifle is any use.
It is a short job with one trick in it, and the trick is the ammunition: the rounds for the rifle are in the car at the start, and a rooftop is a long way to come back down from.
The car at the start carries the sniper ammunition and the objective is easy to drive past. Running the magazine dry on the roof means the game sending Niko to find more, which is a climb back down.
The dealer stays inside, so the mission asks Niko to draw him into the open before taking the shot. Leaving the roof afterwards is its own objective and is unopposed.
Who this mission brings together, and the ground it covers.
Playable

A veteran of the Balkan wars who arrives in Liberty City on his cousin's promise of a mansion and finds a cab office and a debt. He stays because the man who sold out his unit is somewhere in the city.
All 90 missions · 2 as giver
Gives the job

A senior police officer who built a career on the family he pretends not to have, and hires Niko to keep it that way.
7 of 90 missions · 5 as giver