Solvedhelp with throwing (grandes)

ALSALAM 3LYKOM

HI ALL

I WANT TO COMPLETE THE FORTH BADGE OF SOLIDER WITCH NEED 100 THROWING KILLS

SO I TOLD A FRIEND ABOUT THAT AND WE PLAYED TOGETHER IN ROOM IN A EMPTY CHANNEL AND HE LET NE KILL HIM USING GRANDE

AND AFTER FINISHING THE KILLS NOT ADDED

WHY? AND WHAT IS THE WAY TO COMPLETE IT QUICKLY


THANKS FOR YOUR HEL P

not 3vs3,it has to be at least 6 players in the room.