Welcome to the Community Guide to Firefight - here to help you!
Part One: Enemies
Take shots carefully, and don't just spray and pray. You'll end up with a few kills, and no ammo to finish the set. Use careful techniques to kill harder foes.
Grunts - Can be killed with a few Plasma Pistol shots. As they carry these weapons, ammo is no object. Save as much AutoMag ammo as possible.
Jackals - Use the AutoMag for these Covenant marksmen. One headshot will be enough, so don't use any more ammo than needed.
Gauntlet Jackals - There are two solid techniques here. The first is a charged Plasma bolt to their shields, followed by an AutoMag shot to their heads while they're stunned. The second is to use two AutoMag bullets. Shoot them once in the handle of the shield, and they will fall backwards in a recoil. Take a headshot once they're an open target.
Drones - Bursts are key. A single Drone will take around six SMG rounds to fell, so bursts are a requirement. Otherwise, recoil and spread of fire will suck up your ammo like a sponge.
Brutes - Using a combination of the SMG or a Plasma weapon to remove their shields, followed by a single Magnum shot, will make those big guys fall over onto their faces.
Hunters - The toughest of the lot, if you ask me. Use heavy weapons such as mounted turrets or Rockets. Once a bit of their armour falls off, get shots off into their flesh. They'll fall in no time.
Wraiths - When confronted with Wraith tanks, stay back on the higher difficulties, shoot them with Rockets or Fuel Rods if you have them and if you have a clear shot. I have seen many people die by Wraith Turret/Mortar fire because they try to run up on the Wraith and board it. The primary target is the turretsman. Kill them, and you will be able to take out the Wraith effortlessly when you get close enough.
Ghosts - These speedy vehicles are a pain, especially in groups. On higher difficulties, they will tear you apart. Use the AutoMag to headshot Grunts, but if you get a Brute driving one, be ready for different tactics. The Plasma Pistol will provide a perfect immobiliser, but only when they get close enough. Stay in cover, and try to focus on the driver, not the armoured front.
Choppers - These attack vehicles are deathly hard, even as a Spartan. Your best bet is to immobilise the vehicle, then kill the occupant. Remember, never shoot the front. They are very heavily armoured. Wait for them to turn around, and then blast the driver with some burst weapons. Then, a simple headshot will kill the driver. If possible, don't destroy these vehicles. They will come in very handy if you can actually use them (unconfirmed as of yet).
Engineers - These poor creatures are now Covenant bombs, and moving shield generators. Take them out ASAP, or you'll find your enemies have more shielding than before. Kill them over a group of Covenant, and they will fall onto them, creating a nice explosion, and helping calm the Covenant assault. From gameplay videos around the net, it appears that they have a lack of a headshot-spot, so you'll likely have to spray and pray. Drain their shields with Plasma, and finish them.
Chieftains - By the time you get to these bad boys, you'll need to use whatever you have left. Your ammo reserves ill be very low, so take it carefully. Fire off a few bursts from the SMG or any weapon that has lots of ammo, and the Chieftains will, or should, turn on their invincibility generators. Then, all you can do is run. Once they're out, use any quick-fire weapon to fell their armour, followed by a Magnum round to the face.
Remember: Trying to directly stick a Chieftain WILL NOT WORK until you shear their armor off. (-blam!- cheating brutes).
Firebombs are the only *sticky* grenade that will work on them at all times. Just try and wait until the chieftain uses up his invulnerability to get the most damage out of your firebombs.
Part Two: Weapon Selection
Save all heavy weapons as long as possible. Never, repeat, never use things like Rockets or a Sniper on anything less than a Brute. It's a waste if you do so. Make sure your squad mates do the same. Remember, saving Rockets for Chieftains is a good idea, because once they're all down, you get more ammo.
Part Three: Map Knowledge
Never go straight into Heroic or Legendary without playing on Normal or Easy to get used to the map. Figure out your best vantage points, and also the worst locations. Know where enemies will come from, and you'll never be caught out.
Part Four: Teamwork
Stick together, but don't focus on the same targets. Tell your teammates what you're shooting at, so they know not to waste their ammo on it. The last thing you want is to waste your last five rounds of the AutoMag on a Jackal your friend was just about to cap in one. On top of this, know your strengths! If one player is a good sniper, let them have the sniper. If one is good with Carbines, leave them to get them. Also, take turns with weapons. The last thing you want is your teammates moaning about never using the sniper.
Another method is known as "the Combo". This specific tactic requires a partner, someone who knows how you play and move, and vice versa.
Player 1: Plasma Pistol secondary, Plasma Rifle/Brute Shot primary
Player 2: Automag primary, Carbine secondary
Player 1's job is to down shields and expose targets to headshots. Player 2's entire job is to headshot. That's it. Do that, and Player 1 will be fine. This combo cuts through enemies very very quickly.
Post edited 9/18/09 5:14PM