Best way to create a combat system like "The Culling"?

Hello, I was just wondering what is the easiest way to create a combat system like “The Culling”(jab, block, charge etc.)

I’m not asking anyone to write an entire script(and no one would do that), I’m just asking for some tips that would help.

Thanks in advance,
Eggtank.

Yeah my first tip is, Don’t try to steal someone else’s map with exploits, Thank you!