Here is the full list of all 23 Elite Status: Platinum Concierge achievements.
Land a big promotion.
Become a CEO.
Leave Platinum.
Get fired.
Run away with MJ.
Keep MJ safe from danger.
Help MJ bring a wrongdoer to justice.
Run away with a colleague.
Betray a colleague.
Help a colleague stay at Platinum.
Join the Falter household.
Go to jail.
Contribute to the destruction of a great artifact.
Uncover a blackmailer.
Someone died. You can guess who made it happen.
Help contain scandalous rumors.
Encourage Ax to keep zir wealth.
Marry Ax.
Marry Gabriella.
Marry your colleague.
Marry MJ.
Marry Robert.
Complete the game.