How to recheck unchecked updates

I recently installed netrunner and saw I had over 600 updates to install. Knowing this would take a long time I decided to uncheck some updates to make the process shorter and then go back and install the rest. Well once it was finished the other updates I needed I could no longer find.

Is there anyway I can find which updates remain and check them so I can have my OS up to date?

Just load the update manager. If there are updates after a refresh it should show them here.