Best answer is to apply! We do some coaching at the start of the process and work with you to figure out how to get where you need to be. Some folks get through the process in a couple weeks, some take a couple years.

Less good (but easier) answers: * Yes, everyone does all the challenges (though we've retired the fuzzer challenge, it wasn't a good predictor of consulting success). * Our most successful candidates are motivated, curious, and clever.