Hey folks, bare with me as this is my first ever solution and its a bit of a strange one with this cheevo, but in doing this you will acquire all Face of The Franchise cheevos.
You have to play this somewhat questionable "Story Mode" for a few hours as there is no way to sim these Legacy scores like previous games. First off, STAY AS A QB AND DO NOT SWITCH TO CLASSIC MODE, you will void any legacy score earned on that save.
After playing for a while you will eventually get drafted and follow a series of scripted events within a NFL Career and although its hilarious at times its more tedious so just bare with it. Turn your settings to the following
-5 Min quarters
- Pro difficulty
- Arcade game type
each time you are fired into a game just hit super sim and play "Offence only" and rack up stupid stats and scores then when you get a 3-4 touchdown lead sim to the end of the game but just make sure the CPU doesn't catch you and then beat you as it affects your legacy.
doing this i got the achievement just before my 2nd Superbowl in year 6, its only 2-4 games a season you play so just put up as many crazy stats as you can. Each game is <5 minutes so its just a grind. The way you play the game and decision making in some moments are totally unrelated to any type of score and usually only affect the team performance etc...
Hope this is easy to make sense of and Happy Hunting