User blog comment:MilitaryBrat/Master Chief vs Xenomorphs/@comment-1017446-20120204044820/@comment-4555900-20120204172457

Well, it'll take more than two shots with a regular smaller round, more like 12 or 13, maybe a little more than that. And, depending on the size of the larger round, it may or may not take them down instantly. It all depends really, but most weapons can get through them with relatively few shots. The shields aren't that powerful. But I'm not discounting their use completely, while his shields are up, none of those shots will do anything to Cheif, allowing him to continue firing while being hit as long as the shields are up, and, if he's fast enough, he can always get away and allow his shields to recharge. The shield has it's uses, but it's not foolproof, and if you took even one round as big or powerful as a sniper rifle's would be to it, it would more than likely go down from that one shot. Then you get to deal with the armor after that.