To do it you need cheat engine and you must be host, for beginners try it with bots!
If you killed 1 guy write a 1 and first scan it at cheat engine and if you killed 2 guys write a 2 and next scan it. follow these steps till not much adresses are avaible and select them and click the red arrow. now select them on the bottom and change the value to 23 and make a X Active to freeze it so with the next kill you get a kem strike and with every other kill too. sorry for my bad english but i hope this helped.
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