I don't know for hands, the 2D draw i received the hand had only one finger !
I added one more only, this way the hand is optmised and with bump map we can
make the other fingers to have some relief.
Check Far Cry soldiers hands
But yes perhaps i will put all fingers why not.
For the story , combat system etc ... i don't know anything , it's not my
project.
I just participate in modeling , texturing and perhaps animation.