TwinDad, I started with a similar situation, but here the previous try by others was to cover the slope with pachysandra after the grass didn't take. I reworked the soil by hand and supplemented it with compost. Then I planted largely xeric (only low moisture required) stuff.
Here's the early before and after:
And a more recent shot taken after the required wait time (think years) of the sleep, creep and leap of the garden:
I also had to contend with deer, so my choices were limited. Yarrow and salvia are great. A creeping juniper or other evergreens would be good to have for winter interest. As you seek out your choices, use "xeric" as a key word and you'll come up with good options.