The last guy for me in the area was the one you killed at 2:45 and in my playthrough he just dissapeared like that while i was firing at him. At first I thought I killed him and the reason the mission seemed incomplete was that I forgot to kill someone else. I couldn't find any enemies while searching the area and got bored, so i leaved the quest unfinished. After 40 hours of playing, i came back to this quest to achieve 100% completion and guess what. I can't believe i have to load a save file after playing 40 hours on it… Worst bug i have ever encountered in any game.
Edit : I solved it. If anyone want to now how : Shoot enemies moving on the ground.
The last guy for me in the area was the one you killed at 2:45 and in my playthrough he just dissapeared like that while i was firing at him. At first I thought I killed him and the reason the mission seemed incomplete was that I forgot to kill someone else. I couldn't find any enemies while searching the area and got bored, so i leaved the quest unfinished. After 40 hours of playing, i came back to this quest to achieve 100% completion and guess what. I can't believe i have to load a save file after playing 40 hours on it… Worst bug i have ever encountered in any game.
Edit : I solved it. If anyone want to now how : Shoot enemies moving on the ground.
Ah so i guess mine is just bugged. killed all but nothing happens.