The offical answer from FFG's Chris Gerber to my question is:
The text on page 44 of the rulebook should read:
For example, a unit of five Minions (each with five wounds individually) might have a pool of 25 wounds. When the total wounds the unit suffers exceeds 5 wounds, one member of the unit would be eliminated.
The Critical Injury text on page 45 is correct. Remember, as stated on page 15 of the Rulebook, "An attack may also generate a Critical Injury if the target suffers at least 1 wound." This means that an attack that generates a Critical Injury will eliminate at least one minion in the group because the minion group will suffer one minion's worth of wounds plus at least 1.
Enjoy the Game!
Then I asked two further questions:
Thanks for the answer.
I have two further questions.
(1) The enemies of the five minions (with a wound threshold of 5 each) have to inflict 30 wounds to the minion group to eliminate all five minions. Am I right? That is 6 wounds for the first minion, 6 wounds for the second minion, 6 wounds for the third minion, 6 wounds for the fourth minion and 6 wounds for the fifth minion, for a total of 5 x 6 = 30 wounds. Does the "pool of 25 wounds" make any sense? For what is it good for?
(2) If an enemy inflicts a critical injury (due to a triumph) and a total of 6 wounds to the five unharmed minions (with a wound threshold of 5 each), then two minions will be eliminated. Am I right? That is one minion for the critical injury and another one for the 6 wounds. The total wounds of the minion group are 11 (that is 5 wounds for the critical injury plus the 6 wounds). But normally 11 wounds are not enough to kill two minions. You need 12 wounds to kill two of the minions. The result of such an attack has to be at least 12 total wounds. So, it cannot be right that a critical injury counts as one minion's worth of wounds.
The answers are:
1) If the minions (each with a wound threshold of 5) are in a group, than one minion is defeated each time the group's total wounds exceeds a multiple of 5. When the total wounds suffered exceeds 5, the first minion is defeated. When the total wounds suffered exceeds 10, the second minion is defeated. And so on - until the total wounds suffered exceeds 25, at which point the final minion in the group is defeated.
2) As stated above, 11 wounds would be enough to defeat 2 minions.