A and S ratings

The following is a list of all the EXP points reqiured to achieve a rating and what it unlocks. Many of these ratings can't even be attained in normal gameplay. You'll have to play in Replay Mode, Bounty Mode, Scavenger Mode, and Nightmare Modes. 

Rating Exp. Points Required Added Items 
S 400,001+ Gunblade, Ringer's Solution, Eau de Toilette 
A 200,001- 400,001 Hyper Velocity, MP Boost 2,Hunter goggles,  
B 75,001 - 200,000 Recovery 3, MM1, Airburst Grenades,  
C 72,001 - 75,000 Cola, M249, .44 MaedaSP Rounds 
D 69,001 - 72,000 Skull Crystal, .44 Mongoose, Magnum Rounds, 
E 66,001 - 69,000 firefly Rounds, AS12, R.Slug Rounds,  
F 62,001 - 66,000 Aya Special, 9mm Spartan Rounds, Lucky Card 
G 57,001 - 62,001 MD Player, Javelin, Holy Water 
H 51,001 - 57,000 Lipstick, Pike, Tactical Armor 
I 44,001 - 51,000 Hammer, Belt Pouch, MP Boost 1 
J 16,001 - 44,000 M203, Protein Capsule, 9mm Hydra 
K 14,511 - 16,000 M9 Bayonet, M4A1 M Clip, Flare 
L 14,510 or less Monk Robe, Medicine Wheel, Recovery 2 
 

Bonus Ratings

A bonus rating will up a rating by one, two or three depending on the mode. Example: Completely Bounty Mode witha a C will give you a B.

Completing Bounty Mode = 1 extra rating level

Completing Scavengar Mode = 2 extra rating levels

Completing Nightmare Mode = 3 extra rating levels

Bonus Weapons

Hypervelocity

The Hypervelocity is Replay Mode only. To unlock it, you must achieve a rating of A. You then can buy it for 20,000 BP

Gunblade

Only avaible in Replay mode and costs 10,000 BP. Its the same weapon as the FF8 and uses shotgun ammo for the shoot. R1 to swing and R2 to shoot

Monk Robe

You must achieve an EXP under 14510. It is only avaible in the Replay Mode. It costs BP.

Play Modes

Replay Mode and Bounty Mode

To unlock Replay Mode and Bounty Modes, complete the game once

Scavenger Mode

Earn a total of more than a total of 69,000+ in any mode

Nightmare Mode

Beat Scavenger Mode