NCAA Football 11

In Road to Glory mode, go to Stats & Records>Leaderboards>Offline Leaderboards>School. Here you will see the Legend Rank score that you need to beat for your school and position. I played a QB for North Carolina and needed a Legend Rank score over 1385 to make it onto the All-Time Leaderboard.

Short and simple solution, make a QB, max his stats, and put him on a powerhouse team like Alabama. Make sure he is a starter in the depth chart. Select him in Road to Glory and simulate everything and by the end of the 3rd season you will have all 3 all-time leaderboard achievements. You should need just over 2100 legend score to get this. After 3 seasons I won every game including SEC and BCS, won 2 heismans, and had a total of 2480 legend score.

I believe this is the easiest solution because it requires no playing or really messing with the AI or gameplay and you can get the achievement easily while just simulating. I also got the heisman trophy and QB completion % trophy along the way along with a bunch of awards that also help raise your legend score.

Good luck and please leave positive if this helped you.