You can do this solo with one controller.
Head into the garage and set your Body type to 'Scarab or Zippy'. They need to be unlocked by winning matches but Zippy unlocked with only a few wins but I think it is random.
Now setup a 2v2 exhibition match with no bots with the mutator for 'Max Score' set to '1Goal'. Once loaded auto join any team with
and score the only goal which ends the game and makes you the MVP.If the achievement isn't unlocking its possible that you're game is having issues that the game has been having from its initial launch, make sure to force quit the game and reopen to retry it.
Since some don't believe you can do it with no bots here's a poorly shot video of my unlocking it on an alt, best I can record with on xbox One with achievement pops, sorry.