Normally, after completing the normal playthrough and all simulator battles, a player should have 263 FRS points. To acquire the remaining 37, a player must S-rank each mission in Hard mode, however, there is a simpler trick to achieving 300 FRS points.
- Normal mode completed (this is a must)
- Simulator completed (have not checked, but better safe than sorry)
- Hard mode accessible (this is a must)
Now select a relatively easy HARD mode mission (for this, I chose Hail of Bullets) and proceed to complete the mission, achieving initially a rank of LOWER THAN S.
Then, upon completion of the mission, replay the same mission, but this time, acquire an S-Rank on it, and you will receive your FRS point. Now you may repeat that mission, and for each time you S-Rank it, you will receive another FRS point, up to the maximum 300.