This article is about the flamethrower featured in Halo: CE for PC, Halo 3 and Halo Wars 2. For the flamethrower introduced in Halo Wars, see M6634 flamethrower.
The M7057/Defoliant Projector, more commonly known as the M7057 flamethrower, is an incendiary weapon used primarily against battlefield fortifications, protected emplacements and installations, and for demoralisation purposes. It is a variation of the NA4/Defoliant Projector.
The M7057 flamethrower is a standard chemical flamethrower, which projects and ignites a stream of a volatile, semi-liquid adhesive known as Pyrosene-V. Like the M6634, the M7057 flamethrower is cumbersome and relatively difficult to tactically use (psychologically as well as mechanically). In its role as a defoliant projector, it is designed to be used to rapidly clear away heavy foliage for in-theater construction projects and to destroy new or persistent growth from emplaced and/or hardened military assets. Despite being all but obsolete militarily its effectiveness as a psychological weapon is undeniable—unfortunately, the psychological effect is a double-edged sword. The psychological impact of employing an M7057 makes it one in a very small number of items available to UNSC personnel that remotely earmarks the user for a full battery of psychological tests. Due to the weapon's massive size and weight, it is usually deployed with a cart on which to transport it. Despite this, however, UNSC Hellbringers have been known to employ the M7057 seemingly unassisted and without issue. In 2553, Hala was able to use an M7057 unassisted to torch a Sahara-class heavy prowler. During the Second Ark Conflict, two M7057s were fitted onto a specialised Cyclops employed by Lt. Colonel Morgan Kinsano as heavy weapons.
The weapon was one of many featured in Machines, Materiel and Munitions from the Human-Covenant Conflict, 2525 - Present.
The flamethrower makes its first gameplay appearance in Halo: Combat Evolved for PC's multiplayer, later in Halo 3 and Halo 3: ODST, as well as Halo: The Master Chief Collection. The weapon's range is similar to the shotgun, which is only effective at close-quarters. When fired within range, the flamethrower deals lethal damage to unshielded opponents. Against shielded opponents, it will remove their shields and apply a substantial amount of damage on the opponent's health. The flamethrower overheats if used continuously.
The flamethrower functions differently in both Halo PC and Halo 3/Halo 3: ODST. In Halo 3, the flamethrower is one of the few Support Weapons. Players wielding the weapon would move at a slower pace and in a third-person perspective. Moreover, they would not be able to melee or use any of their grenades or equipments. The flamethrower is no longer useful once the fuel has been depleted. In comparison, the Halo PC version does not hinder the player's movement, allows the weapon to be reloaded with new fuel canisters and does not prevent meleeing. However, the damage dealt is weaker compared to the version used in Halo 3. In Halo: The Master Chief Collection, the flamethrower functions identical to the Halo PC flamethrower. In Halo 3, it is one of two human weapons that overheat, with the other being the Spartan Laser. It has a built in failsafe system that stops the weapon firing when it reaches a certain temperature. If the weapon could be fired while overheated, it would melt or explode, and the heat and the flames would harm the user.
With the flamethrower's campaign introduction in Halo 3, it has become one of the best anti-Flood weapons. The hardest type of Flood to fight, the Flood Pure Forms, will die nearly instantly, upon lighting on fire, and destroy any Pod infectors that run over the flames. Though still highly effective against Flood combat forms, they still live for some time while on fire, which can produce some awkward combat moments of avoiding their charging, flaming bodies. Given light of this, it is not recommended to use the Flamethrower in cramped spaces, many of which can be found in the levels Floodgate or Cortana, as the flaming Flood will lead to frustrating suicides.
A good attribute is that it can begin killing multiple Combat Forms at once thereby being as functionally effective as the gravity hammer, with the ones on fire possibly lighting other ones on fire. Once they die, their bodies are consumed by the fire and will not be able to be resurrected by Pod infectors. In fact, any Pod infector that runs towards the body will also be destroyed by the flame. It can also be used to destroy a pile of Combat Forms, so they won't come back if a Pod infector finds them.
The flamethrower is a support weapon, and a support weapon only. If you are wielding this weapon, you back up your teammates. Lighting a whole team on fire can help out your teammates, by weakening their shields. Just be careful, if used incorrectly, you could set your whole team on fire, the flame spreads easily.
The flamethrower is best used in close quarters combat. The trail of flame can act as a temporary smokescreen to blind snipers with. It is especially effective if used to retreat by running backwards away from an enemy to leave a trail of flame, deterring would-be pursuers from giving chase to a wall of fire, use caution because the flamethrower's damage is reduced when running backwards. It is effective as a denial of area weapon, you can set fire to doorways or flags to discourage anyone from crossing that area, and damaging those that do (possibly even catching on fire and killing unshielded opponents).
As a Slayer weapon, it is recommended to use it to surprise people entering enclosed spaces, as it is very lethal up close. You can shoot the flames around a corner as you run backwards around a corner, and any opponents who choose to take the risk of pursuing them will be roasted by flames but unable to get a line of sight to get you themselves.
Sometimes, players even wait near some strategic points, with Active Camouflage and a flamethrower, for example they may wait at the point at which players land after flying out of a Man Cannon and burn the helpless victims. Or sometimes they can hide at one side of a door and when a player runs out, they can burn the unsuspecting player to ashes.
Most types of equipment can often be used to your advantage when escaping the flames, like deploying a Radar Jammer (although it is now not available in matchmaking) to confuse the enemy if he/she can't exactly see you due to the continuous flames, and since you'll be moving about, the enemy can't exactly identify you from the "fake" red dots on his/her radar. Deploying a Power Drain will cause the wielder of the Flamethrower to cease fire temporary to avoid having their shields to be drained if smart enough, however, if the wielder continues to fire they risk being drained of shields and made an easy target to any enemy players in the vicinity.
List of appearances