The game is a Vr game or mmorpg, the game set the sensory stimuli to 100%, the penalty for death in game is a extreme pain to he or her body.
The stats:
Str, Agi, Dex, Vit, Int, Wis, Sense and Willpower. The stats of everyone are set at G and they can increase the stats by training or using attribute point and special item.
The grade of attribute, item and skills:
G : Weaker/lower tier item/lower tier skill
F : Less weak/middle tier item/middle tier skill
E : Average/middle tier item+/middle tier skill+
D : Good/high tier item/high tier skill
C : Great/higher tier item/higher tier skill
B : Amazing/Peak tier item/Peak tier skill
A: Excellent/Peak tier item+/Peak tier skill+
S: Perfect/Perfect tier item/Perfect tier skill
..... (in the future)