Once you arsenal 2013/14 official home kit kill Smoke, you will see a rom emulator for mac cutscene with he and Tenpenny.
You're not going to be able to take out the truck so don't worry about.
This link for explanation on how to solve the problem.You do not need to use the fire extinguisher on the final fire on the gallery you should be able to duck around the left and get by without problems.Should you fail the mission after this point, you will start at the beginning of this cutscene, not at the very beginning.Make your way through the drug lab floor and switch back to night goggles to work through the Security levels.If you had Tec-9's, they're a task this task is an advantage.It is timed and therefore demands more or less perfect execution.Hold down the left trigger, and flick the right trigger to succesively aim at a new target once you've wasted the previous one.Probably the best place to target Smoke is from the balcony as he is visible from there most of the time without seemingly being able to hit you back with any accuracy.Once you've cleared out the shooters remove the night goggles and use the fire extinguisher to move through the burning door and burning sections on the gallery - unless you have completed the Firefighter mission, else you can just run right though.
Ballas Lounge edit, a pretty tedious shooting workout as most of the enemies cannot hit anything that is not next to them.
Saint Mark's Bistro level.
There is a grip bar but essentially this section is timed.
Get the bike and approach the swat tank.Do it before following the instructions above.Confrontation with Smoke edit This is stupidly easy if you have the Chainsaw but it's not even that bad with other weapons.Be careful with shooting too close to the chain link fence around the balcony.Sweet will always warn you at the start of each wave and you simply need to shoot the threats as quickly as you can.In the main room you need to trigger the swat team to arrive before you can progress, use the crates as you enter for cover.You can bunny hop behind the swat line or turn around right after you get on the bike, and come at the tank from behind.For mouse click/move problem: If you are having problems with mouse click or mouse look in GTA San Andreas, follow.