When you get close, they warn you that guards are watching the main entrance. Get to the southern gate and hop over it - you can see a chainsaw spinning right there. Get your AK ready and come around the edge of the buildling slowly. They spot you and start shooting at you. Go back around the corner and take them out one at a time. Work your way slowly back into the building, killing the bad guys as you go.

When it's quiet, start lobbing grandes at the marked white machinery. More guys will come out to shoot you partway through this - switch to your gun and take them out before resuming your lobbing hobbies. There's also a powerful shotgun that one of the attackers drops that does one-shot-kill damage to the machines. If you're not good with grenades, give this weapon a try. Another nice idea is the rocket launcher which can take out 2 or 3 at once.

When you are done with all of the machines, you're told to get back to the casino in one piece. You're not chased or anything, so this is mostly a matter of avoiding cop-attracting activities.

Drive into the garage, and you tell them there's no more trouble.

mission passed!
$10,000
respect +

Grand Theft Auto San Andreas Walkthrough