add a progression to the player profile card could be a challenge system, in the form of ribbons or medals that would also unlock facts for the player to read about relating to challage that one completed.
get 100 kills with m1 garand < get 500 kills with m1 garand <get 1000 kills with m1 garand <get 5000 kills with m1 garand
and the same with all the eqipment in the game from grenades to tanks to melee