In alphabetical order. All difficulty is assumed Legendary because that’s where what’s good and what’s not is most clear. Assault Rifle: Utter garbage. You often begin levels with it; dispose of it for pretty much anything else ASAP. Near zero damage to shields and horrible accuracy make it worthless. Needler: Another weapon you should never use, but not because it’s bad or anything, just everything else is so much better. Needles are too slow. Pistol: Widely agreed upon as the best weapon in the game. Best weapon against grunts, kills carrier forms in 2 shots and combat forms in about 4-6. Can instakill hunters. Performs very well at range. Only weakness is its low damage against shields, but... Plasma Pistol: The second best weapon in the game. Able to burst down a major elite’s armour after a (very fast in CE) overcharge as it fires as fast as you can mash the trigger. A very versatile weapon with few faults, although it’s not great against flood. Plasma Rifle: About equal damage to the plasma pistol and performs slightly better at longer ranges as well as being better vs flood, but overall worse because of no charge shot. Still a fairly good weapon. Rocket Launcher: Better called a nuke launcher than a rocket launcher because of its sheer damage output, but arguably only useful in a few situations because it’s [i]slooooooow.[/i] Everything about it is too slow: the melee, the reload, the rocket itself, your corpse sent flying after you kill yourself with it (the chance of which increases exponentially the longer you have it)...Did I mention the rarity of its ammo? Shotgun: The best anti-Flood weapon in the game. Capable of instakilling them at insane range, and can even one or two shot elites at point blank (although you’ll die before you get there). Don’t use against jackals or sentinels, it’s largely ineffective against them. Sniper Rifle: The best anti-Covenant weapon in the game. Two shot bodyshotting a red elite on legendary is no joke. Pretty much a more powerful pistol that has a longer reload and less ammo as well as no unscoped aim assist. Near zero damage against Flood and Sentinels, however. Now, since not all the levels are the same, here’s what each level should have you using: Pillar of Autumn: Plasma Pistol/Pistol Halo: Plasma Pistol/Pistol, swap plasma pistol for sniper once available Truth and Reconciliation: Sniper/Plasma Pistol. Noob combo the gold elites. Silent Cartographer: Pistol/Plasma Pistol Assault on the Control Room: Plasma Pistol/ Pistol for most of it, feel free to swap the pistol for the sniper if you feel lucky. Use the Scorpion/Ghost instead of a weapon whenever possible. 343 Guilty Spark: Pistol/Shotgun. Easiest level in the game. The Library: Pistol/Shotgun. Prioritise the shotgun over all else - use the pistol for anything at a longer range. Two Betrayals: Only consistent weapon is the plasma pistol. Use the shotgun when flood appear, the rocket launcher against the wraith at the start as well as the gold elite, the pistol for a longer reach and headshots, hell even the plasma rifle for ranged anti-flood work when you run out of pistol ammo (which you will). Use the banshee/ghost instead of a weapon whenever possible. Keyes: Always keep a Shotgun, have the other slot as a plasma pistol/pistol depending on whether you’re facing covenant/flood respectively. The Maw: Shotgun/either pistol again, but once you reach the armoury swap the pistol you’ve been using for a rocket launcher - the shotgun will carry you through the flood in the rest of the level. Rocket any covenant because there’s a lot of ammo for it here.