[SegaSlash]

I've uploaded a video of the best maps to farm killpoints, so you can extract mods to make way better weapons.

This video is in Spanish but you can turn Subtitles On in English.
https://youtu.be/T88Pz3a8k6Q

These are the best places in the game because soldiers (10 or 20 Killpoints) or Elites Generals or Snipers (30 killpoints) come out very often from doors, edges or walls.