aroostrm

On the Prophets Inner Chamber Level; where you ride the elevator up to the darkened room, I usually go back thru the lit-in-red corridors leading up to the elevator, and pick up spare weapons. Despite how you may/may not feel about this tactic, the elevator will transport you ANd an unlimited stash of spare weapons. I usually like to use an almost fully loaded shotgun, and any double-wield weapon as primary.

-Aroostrm

As far as weapons, the Pulse (Plasma?)Cannon is awesome. It can take down a hunter in 1 shot, and holds many more rounds than the rocket launcher.
And I really like the way the weapons are "ranged". Like how it the Carbine and Brute gun are not as effective at long range. The Brute gun seems to me to have problems with aiming and elevation. What should be close range hits with the brute gun sometimes go over their heads, or do inconsistent damage.
Since the Carbine, Battle Rifle, Beam Rifle , and loser Rifle can all be "zoomed" , I think it makes single player mode slanted towards loser type tactics. But, the Energy Sword and shotgun are so awesome in close quarters, that it adds that much more depth to the game by supporting that style of play also.
You could not do better than Bungie did here ! ( even though , for me the Battle rifle and Needler suck! )