Preps are SO easy. All you need is a good combo or a good aim with the different weapons you have at that time. Russel knocked me out about two times, methinks, before I got him. Earnest was pretty tough, although I was muttering a made up strategy guide while I did that.
Johnny was pretty tough... but only because I wanted to repeat that again and again. Edgar knocked me out about five times. Darn his mad skiddles with a large pipe. (Insert innuendo here.)