At the moment: (((headshots + hits / 5) + kills) * 1.5) + engixp + battlesence + revives*4
The headshots is not balanced. It takes more than double the shots to kill a person without headshots. Because headshots are only worth twice the value of a hit, you make more points killing someone with only bodyshots, which is the opposite of what it should be. You shouldn't give players lower rate for headshots.
Too bad acc isn't included too.