What is this hack called??

There's a hack, where nobody can see the user's name, and ESP doesn't even detect him, he has infinite health too. What is this hack?

Thanks.

its called the unreal hack

its unreal
look for it on youtube but if it doesnt work delete "System32" and that should fix it

Im sorry, am I supposed to laugh or something?..

is my private hack.......
at that time i remove me from player list.