Not exactly a guide but useful information for the second hand market, following the games online delisting there are two disc based versions in circulation a Season Pass disc which only has episodes 1-5 and an adventure Pass disc which has all 8 Episodes, if you're solely after the Platinum, you only need those first 5 episodes, Episodes 6-8 are classed as DLC and do not make any progress towards this Trophy.
(This also Applies to the Playstation 4 version)