Never really noticed about people but animals respawn at dawn probably the same for non mission people.

thanks

This is an old topic, but in case somebody else seeks that answer, I can confirm that NPCs also respawn.

Besides which, it is worth mentionning that at least some finished missions also respawn (however I see little interest in doing any given mission more than once).

Yes, I think they respawn. I remember I had to do a devastation of the DU camp on Gil for a mission, and later I managed to get my rep green with the DU again and re-visited the camp: New guards, and the commander saying something like

"You have thought twice about it... Here a mission...".

What's weird is: if you chose the Klatz side to fight with you will never get the keys to open the DC camp doors, there is a hole were you can enter. Even once getting a mission inside you will have to leave through the hole 🙂

Shorty I will upload something like a walkthrough. It's  a voice-over synthesis of varied tips. I just put in the most stable Installation that worked for me.

XenonS