Mythic Dawn Cave - Main Quest, help how to get the sacrifice out alive Options

[spyglass]

I am a archer mage. In the Mythic Dawn shrine where you are to grab the book Mysterium Xarxes, has anyone got the sacrifice out alive?

After events unfoil I am locked in The shrine area until I pick up the book, did I miss a key on the way in?

If it was not for all the locked doors I could work ahead and kill off all the Mythic Dawn guards. Now the sacrifice runs ahead of me and gets killed.

Please post some tips.
thanks

[Olav]

It is better to leave the book and sacrifice alone until you've killed all the Mythic Dawn agents in the cave, then go back for them. No need for resurrection console commands then.

[spyglass]

It is better to leave the book and sacrifice alone until you've killed all the Mythic Dawn agents in the cave, then go back for them. No need for resurrection console commands then. 

Olav, how do you get out of the shrine area to clear out all the MD agents if the gate does not open til you take the book off the alter?

[Olav]

Olav, how do you get out of the shrine area to clear out all the MD agents if the gate does not open til you take the book off the alter?

I didn't know the gates didn't open until you removed the book. Well it's been a while since I did it, but I guess I grabbed the book after killing the 4 Mythic Dawn agents present in the room with the sacrifice (the others will leave). Then I explored the cave and killed all the agents (I remember I returned to the sacrifice room through that closed gate on that ledge mentioned earlier, where I killed the head agent. There was a lever or switch to open it on the other side).

Then I released the sacrifice, who then escaped safely through that now open gate.