Looking for a deep dive into Deathwatch: Mark of the Xenos ? While it’s technically a supplement for the Deathwatch RPG
and Chaos Space Marine variants like Noise Marines and Plague Marines. Chapter IV: Advanced Adversaries : Introduces sophisticated rules for warhammer+40k+deathwatch+mark+of+the+xenospdf
The book breaks down enemies into several high-threat categories: Looking for a deep dive into Deathwatch: Mark of the Xenos