pretty sure when Bungie a few weeks ago released numbers for those that had it - only 1,700 players had it - pretty sure 6,000 in two weeks time did not grind it out. but I could be wrong. and steps are not cumulative. one at a time. #8 will take a while. recommendation is that you do not reset ranking until you have gotten to that quest line, you may instantaneously have 1 completion under you belt.