Activision

The Blacklight Flashlight challenge is part of the The Boys event.

How to get melee kills using Blacklight Flashlight in MW3

We recommend equipping a melee weapon to help you earn melee kills using Blacklight Flashlight in Modern Warfare 3, rather than relying on your standard melee attack. The Karambit or Combat Knife will eliminate a player instantly, while the regular attack will take a couple of hits.

Although the challenge is part of The Boys: Supe Takedown event, it’s also much easier to complete it in regular multiplayer matches rather than the Supe’d Up LTM. This is because the Temp V drops in The Boys mode grant extra armor, meaning melee weapons will require more hits to earn a kill.

With this in mind, loading into normal multiplayer games, preferably on smaller maps like Shipment, Meat, or Rust, is the way to go. You can also make full use of Blacklight Flashlight by equipping Covert Sneakers to mask your footsteps and help you sneak up on player

That was everything you need to know about how to get melee kills using Blacklight Flashlight in MW3.