Grand Theft Auto: San Andreas/Saint Mark's Bistro

This mission is essentially a run and gun homage to the original GTA III game. Initially to have to fly a jet to an arbitary location off the coast near Las Venturas which marked as being "Liberty City" (the setting for GTA III). Then there is a cutscene showing CJ getting a taxi to St. Marks Bistro (a location used in the first game) in the snow.

After this it's purely a case of moving through the building killing everyone which should be pretty easy if you've picked up items like the Chaingun or M4 rifle in Las Venturas.

After completing the shooting section you have to fly the jet back to Las Venturas and land it to complete the mission.