|First off, you need to create a Home-Made game. You can do this by going into the single player menu and then creating your own game. I would suggest picking one game and a relatively easy one at that everyone will like, something like Mathletics. Now just back out to the main menu and then choose multiplayer and opt to host a multiplayer game, then go to settings and choose your home-made game. Once you have finished the game the achievement should unlock, regardless of whether you win or lose.|
You also need to host an ordinary game online, go to the multiplayer menu and choose to host a game. Once you have started you need wait for people to join. Once you have finished the game the achievement will unlock regardless of whether you win or lose.