User blog comment:MilitaryBrat/Master Chief vs Xenomorphs/@comment-1017446-20120204044820/@comment-4098900-20120204215941

well lasers are more effective and lethal then bullets, so if 50-cal bullets will do great against him then what I just said about lasers vs 50-cal bullets and since a 50-cal will break his shield it kinda does mean that lasers will break his shield. And I'm assuming that you don't know if particle beam energy is plasma right?.