I believe it might be difficult.
From technical point of view it will require to use server capacities to store and process data of all linked accounts in order to track progress. Load might be not that bad, but you have to synchronise game data and server data. For this you probably will need a client of alienware arena on your pc.
And probably another thing might arise. One probably need to discuss it with game developers to add this feature. Maybe there is no such thing, but it can be that way.
So in other words, it is harder to do than we might imagine. But I might be wrong.