Breach & Clear
Protip for getting all 2400 stars
just farm to 20k and buy 4 p90s, 4 of the gas systems that makes the rate of fire go to 0.01, and 4 $750 flashlights for slightly increased accuracy. and put them on an entire squad. play on insane difficulty and have fun. make sure that you have permanent death disabled tho. otherwise itd be a ♥♥♥♥♥ to restart or lose a highly skilled soldier