If only they looked more distinct from one another.
Similar to the original Mixed Spawns, this causes enemies to spawn on difficulties they don't normally spawn on, but for the Murkywater faction. There are two versions: Classic and Deluxe.
Classic Version Features
Spoiler!
Very Hard and Overkill will have a mix of SWAT and FBI
Mayhem and above will have a mix of SWAT, FBI and Gensec
G36 heavies cannot spawn below Mayhem
ZEAL Marksmen can spawn on Death Sentence
Deluxe Version Features
Spoiler!
Every difficulty will have a mix of SWAT, FBI, and Gensec
Black and Skulldozers can spawn on lower difficulties