Adversaries in Deathwatch are assigned to a Tier. We have Troops, Elites, and Masters. Toe to Toe is a Deed from RoB that gives bonuses when in melee with a Master-level enemy. Sounds good so far, but then I get to The Emperor Protects...
The adversaries are not marked by Tier. Sometimes the lines between Troops and Elites or Elites and Masters get a bit blurry, so what are the proper Tiers for the adversaries in The Emperor Protects?