only a question mark appears, it does not show the citizens or the monsters

I beat the boss in the last forest mission but the mission didn't count as finished and i couldn't any other missions. After that i restarted the game and it spawned me in front of the doctor npc that I should talk to except for the fact that she's not there, literally....

Hi, For some reason the game won't let me chose a highter resolution than 1024x768. I do not have this issue with any other game. Has anyone else had this problem? Any solutions?

I have all 10 brats in my inventory but cannot complete the mission as the game only registers me having 3/10. Really annoying since I'm trying to get the last achievement.

I did almost 100% of the game, the only thing I couldn't do was this achievement, there was some bug where the civilians who need help don't appear, the mission is on the mini map but no enemies appear, I've tried respawn, restarting the game, fast travel and it never works again, does anyone have a tip to solve it?...