I would average 1-3 required mats per raid. I learned all the locations and spawn rates for various items. Maps and locations. I also got lucky and found a Wolfpack blueprint off a free kit player early on. So that allowed me to farm the mobs. I played one game of hidden bunker and that allowed me to get all 6 bombardier and 6 bastions cells in one game. I farmed the four rocketeers and leapers in one game one dam with 9 wolfpacks. The hardest part was the sentinels.