Hi there! :) Welcome again! I hope that you had fun playing the first part of the second voice of Bach's invention #8 :) 
Now, we are moving on to the second part.

The fingering is pretty much the same. There is some string-skipping bit in lesson part #2, that you might find a little difficult to play, of course depending on your technical abilities at this point ;) , but with practice, and patience, as I always say, you will surely manage to play it with no problem. But, if you do find that there is a barrier when you try to speed up, then I would recommend you to practice some string skipping exercises. You can find a couple of those among my lessons :) 
So, what else to say. Again, articulation. I would advise you to play throughout most of this piece palm-muted, because, that way you would have that 'baroque' feel in you interpretation.
The best is to use your own 'ear' and to decide, like how does this piece sound to you, and what way do you feel like interpreting it. 

And, one more thing - don't bother much for the dynamics, 'cause on harpsichord there are no dynamics possible, so neither will be a point to bother much for that on the guitar, except maybe, not play it too loud, and ear piercing ;)

Good luck! And use metronome! 

Tuning: EBGDAE;