PS4 Resident Evil 5 Mercenaries United solo Ship Deck Excella 150 kills

on with my 150 kills challenge; this ship deck took me 2 weeks of trying. got plenty of 149 kills because of not knowing when and where the majinis spawn toward the end. still not a 100% sure, but a little better now plus the help of the nitro freeze rounds. by the way, i just discover excella's disco spin is available to kill the chainsaw majinis. all these years i have been playing, i only know of the slap. duh me. :) prison is next. wish me luck.