PS4 Resident Evil 5 Mercenaries United solo Missile Area Excella 150 kills

well, this 150 kills didn't take me long. only a night later on the second try after i did the ancient ruin ruin. missile area in my opinion is the easiest one. there are enough bonus timers and they are placed not too far apart. the gatlin gun majinis are not too hard to kill. ship deck is next because i will never be able to get a 150 kills in experimental facility. :)