Wait, you took a table? Lol, nice one. Anyways, shields work similarly to weapons, so, it give + 1d3 defense. You'd roll for defense every time you're attacked by something. Keep in mind that some shields may make it impossible for you to attack twice.

Assuming you got max damage on him, he's now down to 4HP. I think I'll have him have a potion to keep the fight going another round.