Listing all apps that updated at once
There is no way to do it via the play store, but there are other ways to do it.

You can use something like AppMonster or Titanium Backup (if rooted) to display the list of apps ordered by last update date. This will show you the order in which all apps were last updated, as well as the date of the update. To me this a lot more useful than the recently updated list in the play store.

It's not a perfect solution, but it gets the job done :)