WWE 2K23

Make sure you've set the difficulty to Legend in the gameplay options.
Create a custom match.

Turn winning by pin-falls off,
Turn winning by finishers on,

A few pages later they'll be the option with how many finishers you start with. Set it to 3.

Start a match and pick the custom match type playing as Randy Orton (or literally anyone you want)
as soon as the match starts hit an R.K.O on your opponent and this achievement will unlock.

If you haven't already this will also unlock 'Breathe Easy'

To unlock this I turned off paybacks for both Brock lesnar and Roman reigns. And went into matches options and set start match with 3 finishers and health set to low. Hit 3 finishers on Reigns and then go for the pin. If this still dosnt work use my guide for getting quick Faction wars wins.

Go into the games settings and make sure your on easy, not entirely sure this part is essential. But it’s how it works for me, Also adjust the sliders on submissions to Max for human and minimum for AI. All except the penalties for those set to minimum for human and maximum for Ai. Also make sure you have Mini games set to rapid and you should easily be able to submit anyone in the game within your first attempt. Just like the method last year with Ruby Asuka tho this can be performed with anyone.