I would like to provide feedback via a rubric, but the students will just earn a completion score...

I would like to provide feedback via a rubric, but the students will just earn a completion score. Is there an easy way to do so?
 

Alternatively, I was thinking I could score all of them using the rubric, then go to the gradebook and override the scores by selecting all the students who submitted and using Set grades. BUT will they see that feedback in that case?