I use RC car and win, Just keep fire bazzoka and use helicopter and find highest place where the enemy cannot shot you or lure them falling down to the water, Sometime when enemy stuck they will exit on his Tank and you can kill him
Easiest trick: make your way to the tank and get inside, enemy will get thrown out and then you can get your first kill. After that find a Lamborghini and rush towards tank in zig-zag way (so you don't die). Park your car under the tank. (Tank's missile launcher will go up and won't be able to kill you) again get inside tank and kill enemy. Do the same everytime. Hope this helps you
Not a big deal bro....you need pure skills in watch out below to fly the helicopter..then in oddjob just mess up with arms get more arms and destroy everything until you get 2millions and done... remaining missions are easy afterwards