PS4 Resident Evil 5 Mercenaries No Mercy Solo Public Assembly Sheva Fairy Tale 400 kills

so after i got my 150 kills with sheva fairy tale in prison, i went back to the mine. i didn't even get a 140 kills in the dame damn dogs mine. so i decide to give it a try in public assembly in no mercy. dog gone it, got my 400 kills in the first try. it's actually quite easy. i think it's even easier than the merc united.