Wing of Darkness

You will need to grind this with chapter select post-campaign. Be sure to use Stapler or Mistral primary weapons, as they have the highest rate of fire and will make this grind WAY shorter. This will probably be one of the last trophies unlocked, so be sure to combine it with Ace of Frauleins . It's also a good idea to just go trigger-happy even when not fighting enemies (moving towards them, or during the mission-end radio conversations) to rack up the numbers faster