There is a Prosanguine talent that has Autosanguine as a prerequisite.  It's a lovely talent, I'm sure, but there appears to be no Autosanguine anywhere, either in Talents, Traits, or Cybernetics.  Am I missing something, or did something get let out?

On page 104, under the Precise Blow talent, "category" should probably read as "prerequisites."

On page 93, under Ambidextrous, "to make the distinction mute" should read "to make the distinction moot."

Under Medals and Honors on page 217, the Medallion Crimson gives a benefit that grants a bonus Wound that's refreshed at the beginning of each engagement.  What, specifically, is an engagement?  Is it an individual battle, a series of battles in one place, a campaign?  A bit of clarification would be good.  If you're stealth assaulting an enemy stronghold, and get into three or four separate fire-fights in the process, does the bonus wound refresh at the start of each fire-fight, or just at the start of the first one?  It's a minor point, sure, but best to spell things out.

More of a nitpick, but the Never Die Talent used to be called Duty Unto Death in Deathwatch, then got the name changed in Black Crusade because Heretics don't care much about Duty. I believe it's name should be changed back to Duty Unto Death in Only War.

Table 5-6 is inconsistent with the vehicle sizes used elsewhere in the game.

Massive (7) (Battle Tank) : +30 To hit modifier

Immense (8) (Land raider): +40

Monumental (9) (Baneblade): +50

while in chapter 6:
Sentinal: Size Hulking
Leman Russ: Size Enormous
Baneblade: Size Massive

JCV said:

It is the opposite. Table 5-6 is correct. Vechicles size in chapter 6 are wrong [too small]. It makes no sense that Leman Russ is enormous exactly as Ravener. Simple solution = make all vechicles one size bigger.

Page 92

Specialist Talents

Valhalan should be Valhallan

Page 100

Hammer Blow

The last sentence needs a full stop.

Like Precise Blow

Page 107

Two-Weapon Wielder

Category should be Prerequisite