Counter Strike Online Wiki

Hunter Killer X-90 is a Unique grade Submachine gun in the Hunter Killer series in Counter-Strike Online.


Empty slot This weapon has Part System installed.

A special submachine gun manufactured by Kronos using 50 specially-designed cartridges of 5.7mm ammunition. It is equipped with a Hunter Killer module, activating a tactical scanner after landing enough shots on-target. Thermal vision shows zombie locations through walls.


  • High damage for an SMG
  • Fairly accurate
  • Moderate recoil
  • High rate of fire
  • Light weight
  • Can hit multiple enemies during KX mode activated
  • Appliable with Part System


  • Easily runs dry
  • Hard to obtain
  • Consume ammo to activated B mode
    • Limited duration to use B mode
    • Limited detection distance in B mode

Release date[]

  • South Korea: 23 August 2018.
  • Taiwan/Hong Kong: 28 August 2018.
  • China: 29 August 2018.
  • Japan: 5 September 2018.
  • CSN:Z: 27 September 2018.
  • Indonesia: 10 October 2018.


  • Averagely, firing one full magazine can deal 1000 damage in normal modes, 3400 damage in Zombie modes, and 6500 damage in Scenario modes.
  • 50 hits are needed to activate the KX mode.
  • When activated, it has a maximum of 50 rounds that can be fired before the mode ends.
  • A total of 6 mode activation can be done with the 300 rounds spare magazine.
  • When using the KX mode, the shots will automatically hit so spam as much as you can. It can also penetrate walls and only hit-able at a certain range.
  • This weapon is deadly in KX mode if combined with Deadly Shot as it can hit multiple enemies with high damage and rate of fire.




  • This weapon is based on P90.
  • Its sound has an aftersound in B mode which is also shared with Hunter Killer X-12. Oddly enough, the first weapon of the series, the Hunter Killer X-15 does not have it.