Hell, Unleashed starts off hard and then it just gets harder. This isn't the workout one comes looking for, it's the workout that finds you when you sign up for Hell Week and it delivers a wallop. Every exercise is time-based. This means you need to get in as many reps as you can and then either keep on improving or, at the very least, maintain the rep count. You'll sweat. And you'll feel hot. And you will probably swear a little too.
Extra Credit: 1 minute rest between sets.