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MechWarrior 4: Black Knight is an expansion pack to MechWarrior 4: Vengeance that contains new 'Mechs, multiplayer modes and a black market for trading equipment. This expansion requires the MechWarrior 4: Vengeance to be installed and is not a stand-alone adventure.


The story follows Eric McClair, a recently discharged 'Mech pilot from House Davion. Eric joins the Black Knight Legion, a mercenary group led by Colonel Lawhorn. Initially taking on mundane escort contracts from the Corvatti Corporation, the Legion is approached by Lyran Alliance mercenary liaison officer, Major Clarrisa Dupree. The major offers a contract for the Legion to assist in the retake of Kentares IV on behalf of House Steiner and gives free 'Mechs to the Legion as a gesture of goodwill. On Kentares IV, the Legion runs disruption missions, taking out key assets to Duke Ian Dressari's forces.

The Legion is soon double-crossed by Major Dupree who is now in allegiance with Ian Dressari. The Legion is attacked by Steiner mechs, killing Colonel Lawhorn and putting Eric McClair in charge of the company. McClair decides to continue the original contract, going after Ian Dressari. Working with rebels, McClair works his way to Dressari's palace and kills him along with his closest supporters. McClair then sets his sights on Major Dupree. Hunting her down to the planet Voltrat III, the Legion kills Dupree and her entire garrison of Lyran 'Mechs. McClair decides to make Voltrat III the new home of the Black Knight Legion.


The campaign features 23 new missions divided into five "Ops". The player salvages weapons and 'Mechs like in the first game. New to campaign is persistent inventory. Destroyed 'Mechs and weapons disappear from the armory. Damaged or crippled 'Mechs require time to repair and if the player chooses to pilot these 'Mechs on the next mission, they start out damaged. The campaign also features the black market, allowing players to trade for the 'Mechs and weapons they need.

Additional Multiplayer modes have been added

  • Absolute Attrition: Like Attrition but now tonnage is factored into the score. Lighter 'Mechs are rewarded for taking on heavier 'Mechs
  • 'Mech Strongholds: Both teams have a headquarters and must destroy the other team's
  • Siege Assault: Destroy or defend the HQ
  • Golaiths: A small team of assault 'Mechs against a larger team of light 'Mechs
  • Clan vs Inner Sphere: One team is Clan and the other team is Inner Sphere. Teams are restricted to their faction's equipment and 'Mechs

New 'Mechs and Weapons


  • Autocannon 20
  • Ultra Autocannon 10/ 20
  • Clan Ultra Autocannon 10/ 20
  • Cluster Bomb
  • Small/ Medium/ Large X-Pulse Laser


Manufacturer: TharHes Industries, Arc-Royal MechWorks
Introduced: 3028
Model: WLF-2
Class: Light
Cost: 3,141,180 C-bills
Mass: 35 tons
Chassis: Arc-Royal KH/3
Armor: Durallex Medium
Engine: GM 210
Speed: 97.2 km/h
Jump Jets: None
Armament: 1xER Large Laser, 4xMedium Lasers
Manufacturer: Babylon MechWorks V, Production Line Gamma 2, Ironhold Plant 9
Introduced: 2890
Model: Prime
Class: Light
Cost: 5,368,837 C-bills
Mass: 30 tons
Chassis: Process 12 Endo Steel
Armor: Compound H18 Ferro-Fibrous
Engine: Starfire 180 XL
Communications System: CobraTalk 12
Speed: 97.2 km/h
Jump Jets: None
Armament: 1xLB-X Autocannon/5, 1xER Large Laser, 1xSmall Pulse Laser, 1xStreak SRM-4
Manufacturer: Tokasha MechWorks Gamma
Introduced: 2930
Model: Prime
Class: Medium
Cost: 14,771,112 C-bills
Mass: 55 tons
Chassis: Model MHO-7E Endo Steel
Armor: Compound H17/2 Ferro-Fibrous
Engine: Fusion 330 XL
Speed: 97.2 km/h
Jump Jets: None
Armament: 3xER Medium Lasers, 2xER Large Lasers
Black Knight
Black Knight
Manufacturer: Kong Interstellar Corporation, Robinson Standard BattleWorks
Introduced: 2578
Model: BL-6-KNT
Class: Heavy
Cost: 7,136,938 C-bills
Mass: 75 tons
Chassis: Technicron 1L Endo Steel
Armor: Numall DuraBond
Engine: Vlar 300
Speed: 64.8 km/h
Jump Jets: None
Armament: 1xPPC, 2xLarge Lasers, 4xMedium Lasers, 1xSmall Laser
Manufacturer: Luthien Armor Works, StarCorps St. Ives, StarCorps Crofton[2]
Model: SD1-O
Class: Assault
Cost: 27,693,687 C-bills
Mass: 90 tons
Chassis: Alshain Class 98 Omni
Armor: Mitchel Argon
Engine: Hermes 360 XL
Speed: 64.8 km/h
Jump Jets: None
Armament: 1xAutocannon/20, 2xLarge Lasers, 3xSRM-4s, 2xMedium Lasers

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