It seems they patched it and the achievement should unlock fine now, if it still doesnt try the method below...
This is only achieveable on the Windows 10 version. I was going crazy earlier on the console version because i couldnt get it done.
Just play a regular game you will get this by achieving a x25 from the ball getting hammered on.
I just saw this on the forum so i thought i might add this since my method might have stopped working due to a bad patch:
Posted on 23 December 19 at 22:37, Edited on 24 December 19 at 07:07 by PkChris
Just a PSA, all of the achievements in the Windows 10 version stopped working when they updated the game to version 1.06 on Xbox while leaving the Windows Store version at 1.00. The Windows 10 version will most likely remain broken until the game is updated from version 1.00 on the Windows Store.