I was in my medi terrainpin. Went on foot for a while, realized my mistake, then jumped in the ship to thin the herd. Gave up after about ten minutes and Cod Zombies level npc dead body piles, and a terrapin missing its little wings on the vtols. A pulse may have been a better choice, but you would need to climb the mountains of dead bodies with it pretty quickly. I killed probably close to 100 guys before I dipped out (had a few parts in the terrapin by then and was getting bored shooting fish in a barrel)