After you have created a VP, begin a career as a player manager but choose to create a player.

For this to work you ned these settings.

Difficulty - Word Class or higher
Half Length - 10mins or Higher
Game Speed - Fast

Now you are set.

Choose to play each game controlling the player manager that you created. Your VP will play by himself and you will be credited for doing the accomplishments.

You can normally achieve arount 60% in only a few games doing this. There are a few accomplishments that can only be achieved during a VP be a PRO.