Well. It depends. On what play list you’re in. On how good you are with a precision weapon. On whether or not you’re willing/able to alter your play style based on the available weapons. On whether or not you can reasonably expect a reload from the map.
I’m gonna limit myself to spawn weapons here and go with the ever-flexible battle rifle. If somebody took away my AR/DMR all-purpose combo and made me go with a single weapon, the most versatile would be the BR. Watch somebody use a BR who’s insanely good at H2 or H3. They can use it like a shot gun where you’re dead so quickly and at such close range you almost assume they were using a shotty and a melee. They can use it at AR range and dominate. They can use it as a range weapon and kill you from so far away that you never even saw them. Most people, like myself, are only effective with the BR at ranges that are slightly longer than AR range and slightly shorter than DMR range, but watching someone use it as the universal weapon, someone who really knows what they’re doing, is both amazing and utterly terrifying.
For Halo 4, I have chosen the railgun, as it is a relatively fast anti-personnel weapon that is useful. It’s a personnel equivilant of the Spartan Laser. It’s relatively accurate and you can do damage from about any distance with it. If you really know what you’re doing with it, you can literally snipe people with it XD. Out of all the times I have used it, I have only ever had one person survive a direct blast to the torso without an overshield, which I blame lag or a glitch for. It’s only downside in my book is it’s lack of effectiveness against vehicles and slow reload speed.
Railgun with dexterity is a nasty beast, it’s definitely the way to go on that weapon.
The BR is just most versatile as described above, and there’s nothing like that feeling described where you feel invincible from nearly any range.
I chose the Sniper Rifle because its kills are so satisfying. Also the multikill potential is obviously huge, and its common enough on maps that I feel I’ve largely mastered it.
Well, there’s a reason why just about everyone prefers the Battle Rifle over every other loadout weapon. However, the SAW is much more lethal against both enemy Spartans and vehicles.
My personal favorite is the Spartan Laser, it makes very short work of annoying vehicles like the Mantis.
For me I have two: For the loadout is the Assault Rifle, I can distract anyone with a DMR or BR while they’re aiming at me, I just jump, crouch, move to the sides all while keep shooting them. Of course this doesn’t work with anyone who uses an aim-bot cheat ¬¬
As for the Ordenance weapons, I use the SAW since it’s like the double of damage of the AR…I really like theautomatic weapons.