Okay so here's a couple of tips for you guys for F.U.B.A.R. First of all, make Cocheta drive and Diane shoot. Her Compact SMG is just perfect, 1 shots to all of enemies ( not zombies ) and really fast. You need to max faster tasks since you'll get a lot of ammo on the road and visit garages. ALWAYS get 5 steroids and 5 med patches. When you're getting ammo or you're in a garage, use steroid since sometimes enemies can get buggy and shoot you behind cars / objects. And this may be a bug I don't know, when you go from highways ( an animation comes out ) It heals you. And never hesitate to use your med patches, I lost so many times because I thought I wouldn't need it. Hope this helps, good luck!