Question about Karma in last part (Oil Derrick) of Caspian.

So I have a guide that tells you how to get the good ending and keep Damir, but it seems there's a branching path where you could potentially lose/gain a point and I want to know what the best option is.

So here's "everything" you have to do in the last part when you enter the base with Damir.

• Recover the water bowser undetected and with no kills, there's extra points to be gained if you release a couple prisoners guarded by a hound on the ground next to the truck with the water, but may not compensate for the risk of being detected.
• When infiltrating the fortress on the last mission you'll gain a point reaching the surface without killing or being detected. Saving a slave from his punisher midsection will grant you another point but then again, it'll turn, most likely, everyone hostil towards you.
• When going up towards the Baron on the oil derrick, knocking out a soldier harming his slave will earn a point. Be sure to knock him out when no one is looking at him otherwise the next point is impossible to acquire.
• Further up the stairs, a man is about to hurt his female slave. Knock him out to earn another point. (Note: this will cause the bandits to become hostile.)

So from what I understand, it wants you to go undetected. But you get a positive karma point for saving the female slave, but it makes everyone agro, and then you have to kill anyone.

It kind of seems like there might not be a "best" option. I want to save the female slave but I also want to make sure I keep Damir because I was so careful this entire mission to do EVERYTHING correct, as I've never kept him before.

Does anyone know what I should do?