Haggar Would Be Proud achievement in Marvel vs. Capcom: Infinite

This can be done in a private lobby with a friend, to do this simply go to Battle Mode from the main menu, selecting Online then Lobby, followed by Create Lobby, from here do not push create lobby just yet, instead be sure to put Lobby Size to 2 and Friend Invite Slots to 1, you can now press Create Lobby. invite your friend and simply approach your friend and press right beside your opponent/friend. Do this for as many matches as you like but you should be able to do so in 2matches/4rounds, either way, you'll obtain your achievement. Note: some people may unlock the achievement at 50 exactly while others will have to wait until the match is fully finished, which happened to be the case for me.

For those who are unable to do this because they have no friends/or friends that play the game, or no-gold or whatever the situation maybe, you'll have to do this the real way in Arcade Mode but here are a few tips to help you out if you are struggling.
For starters you can use the Space Infinity Stone/The Blue Infinity Stone which will draw your enemy towards you which you can then follow up with for the grab move.
Another thing that can be helpful for both methods is using the Character Firebrand (the small red dragon on the Capcom side) his grab reach is slightly further than most characters.
Hopefully this helps good luck.