The point is to show how to deal with the challenges posed by Defensive Pacts in an on-the-rails, no gimmick playthrough (this also means no vassal pope).
It does not try to give the fastest way to get SPQR, otherwise we wouldn't be using Defensive Pacts at all. achievement with Defensive Pacts on, and gives detailed descriptions of the intermediate and advanced game concepts your success relies on. This guide describes how to get the S.P.Q.R.
3 Patriarchae Orientales – The Roman Restoration.2 Inter Arma Enim Silent Leges - Getting Started.1.3 Invasion with bloodline (Holy Fury DLC).