Choose your friends wisely -- Barranca and Satipo are examples of who NOT to choose.
True friends are there for you when you need them. Like Sallah.
The answer to the Revolver vs. Automatic debate: take both! (reference: Raiders of the Lost Ark, specifically, the Raven barfight) Don't forget a couple of reloads!
Only one thing matters: your goal. Not your hairdo or your new leather jacket, or the fact that your nose may be bleeding. Just get the job done.