Modern Warfare 3’s Campaign features a series of Open Combat Zone Missions where players have complete free roam over a playable area. Those of you who are diving into Reactor, will assume the role of Captain Price as he and the rest of Task Force 141 infiltrate a Konni-controlled nuclear power plant in Urzikstan. During your mission, keep an eye out for the various discoverable weapons and items, as they might just give you the edge in combat.
Reactor is the third mission in the Modern Warfare 3 Campaign and the second available Open Combat Zone. Though blitzing straight through each mission objective will wrap up Reactor fairly quickly, there are quite a few discoverable weapons and items, 29 to be exact. Finding each weapon and item is an entirely optional part of Reactor. However, finding each one will allow you to customize your loadout to its fullest extent.
Silenced Holger 556
The Silenced Holger 556 can be found in the westernmost storage building to the far northwest corner of the map. The door to this building cannot be opened from the outside. To get inside, climb onto the forklift to the side of the building, and then jump across to the roof, heading down into the building from there.
Incendiary MCW
The Incendiary MCW can be found on the roof of a warehouse building, which itself sits across from the storage building where the Silenced Holger 556 is located. To get to the roof, ascend up the vertical zipline to the side of the building (utilizing an ascender).
Incendiary Sakin MG38
The Incendiary Sakin MG38 can be found on the second floor of the construction building over to the western portion of the map – just to the side of the first Konni helicopter you need to destroy to fulfill the first objective.
KV Inhibitor
The KV Inhibitor Sniper Rifle can be found atop the radio tower to the southwest portion of the map. In order to get to it, head on up the vertical zipline at the base of the tower.
Minigun
The Minigun can be found in the fire department (southwest side of the map), at the very bottom of an elevator shaft. However, the door to this shaft cannot be accessed from the outside. To open it up, head to the roof of the fire department using the vertical zipline to the side of the building. Next, head towards a small room marked with an X. Inside you will find a vent, and the Supply Crate containing the Minigun will be visible. Simply toss a grenade down the vent to open the door, and head down to retrieve the Minigun.
Snapshot Pulse
The Snapshot Pulse is pretty easy to find. It is located on the bottom floor of the fire department towards the southwest portion of the map.
RGL-80
The RGL-80 Grenade Launcher is located over by the first Konni Exfil Chopper (near the center of the map) – which will need to be destroyed for the first mission objective.
Silenced Cor-45
The Silenced Cor-45 can be found on top of a construction silo, which sits just ahead of the first Konni Exfil Chopper.
Sidewinder
The Sidewinder can be found on the roof of the warehouse building which sits within the power plant (north of the map). To access the roof, head on up the vertical zipline at the back of the building.
Silenced Expedite 12
The Silenced Expedite 12 can be found at the end of the zipline which runs from the construction silo – which the Silenced Cor-45 could be found – and the main large silo at the center of the map.
Heartbeat Sensor
The Heartbeat Sensor can easily be found on the first floor of the main large silo at the center of the map.
HCR 56 & Incendiary Haymaker
The HCR 56 and the Incendiary Haymaker can both be found right next to each other, just south of the large silo towards the center of the map.
Incendiary FJX Imperium
The Incendiary FJX Imperium can be found all the way at the top of the crane towards the center of the map. To access the crane, head up the vertical zipline at the large silo at the middle of the map
Munitions Box
The Munitions Box is located on a platform in the construction area, just south of the large silo towards the center of the map.
Silenced VEL 46
The VEL 46 can be found on top of a small office building, which itself sits on the southeast side of the large silo at the center of the map. You will also find a Loadout Drop here, which allows you to customize your current loadout.
Armor Box
The Armor Box can be found inside the same small office building that the VEL 46 sits on. However, the doors to the building cannot be opened from the outside. To access it, head to the rear of the building and peek through the open window. Next, shoot the chair that is propped up against the door. Doing so will grant you access to the Armor Box.
Incendiary MTZ Interceptor
The Incendiary MTZ Interceptor is located on the back of a truck to the west side of the main nuclear power plant.
Basilisk
The Basilisk is located within another office building to the far north side of the map. The room where the weapon can be found is inaccessible from the first floor. To get to it, mantle onto the garbage bins on the outside of the building, and then jump across to access the roof. Next, head into the locked room via the skylight.
Hybrid STB 556 & PILA
Both the Hybrid STB 556 and the PILA Launcher can be found on either side of the northernmost Konni Exfil Helicopter – which will need to be destroyed for the first mission objective.
Anti-Armor Rounds
The Anti-Armor Rounds can be found in a ground-level storage garage on the north side of the main nuclear power plant.
Explosive Crossbow
The Explosive Crossbow can be found on the roof of the main nuclear power plant, specifically on the left-side corner facing north. To get here, take the vertical zipline to the side of the power plant.
Signal 50
Just like the Explosive Crossbow, the Signal 50 can also be found on the roof of the main nuclear power plant – only this time it can be found on the south side portion of the plant.
Incendiary Bryson 800 & Silenced Lachmann Sub
The Incendiary Bryson 800 is located within the ground level of the main nuclear power plant. You will find the Supply Crate containing the Bryson 800 just ahead of the southern entrance. The Lachmann Sub can also be found here, in a room to the right of the Incendiary Bryson 800​​​​​​.
Fennec 45
The Fennec 45 can be found within a small storage garage. This garage sits just north of the southernmost Konni Exfil Chopper – one that will need to be destroyed to fulfill the first mission objective.
Cronen Squall & Holger 26
Both the Cronen Squall and the Holger 26 are pretty easy to locate. Each weapon can be found in its own Supply Crate right by the southernmost Konni Exfil Chopper.