It's clearly been answered but I just wish to help. On Venus where the fallen and vex fight? Sorry for not knowing the name it's just to the right from the spawn and keep going. NOT the academy. That's where I go fit vex and fallen. There's the shanks to the left who usually have a reaver dreg then there's fallen to the right with two or so over there and then there's more fallen ahead of them. Then the vex are right there too, but if you want it faster keep going past the major minotaur to the citadel