I saw someone else say this but I don't see it anymore so here you go
This achievement is glitched so if you have done it and it is not giving the achievement to you, then do this:
Go to this link https://link.roguecompany.com/
and link your Xbox account to an epic games account.
Once you do that then hover over the epic games account and click make a primary account.
Once you do that, restart your console or reload the game.
Once you are here just go do the achievement and it should work perfectly fine.
It will be fairly easy with newer players that you are playing against.
To get your main account back you can go back to the link and make the Xbox account the primary one again.
You could also use this method to get other achievements that are too hard to get on your main account you could just go play against newer players (while the account is still a low level)
Hope this helped you and good luck!