I'm sure it's because I suck, but I'm having a devil of a time getting through Halo. I am on board the Truth and Reconciliation right now, but it was practically a miracle that I made it this far. Somehow I was able to kill the Invisble Swordsman elites. The biggest problem that I have is that my Marines keep dying. Right now I'm about to open the door inside the ship, and I've only got 2 Marines. When I open it, all 3 of us are killed within a minute. Can anyone recommend any gameplay tips to keep my buddies alive? Right now I'm using a sniper rifle and a Plasma pistol. Are these the best weapons to have at this point? I'm throwing plasma grenades whenever I can. I'm playing the Normal difficulty. Also, are there any online guides (besides the IGN In-sider guide)?