Rending (X) If a model has the Rending special rule, or is attacking with a Melee weapon that has the Rending special rule, there is a chance that their close combat attacks will strike a critical blow. For each To Wound roll equal to or higher than the value listed, the target automatically suffers a Wound, regardless of its Toughness. The controlling player may choose to resolve these Wounds at AP 2 instead of the weapon’s normal AP value.
Similarly, if a model makes a Shooting Attack with a weapon that has the Rending special rule, a To Wound roll of equal to or greater than the listed value wounds automatically, regardless of Toughness, and is resolved at AP 2.
In either case, against Vehicles each Armour Penetration roll of equal to or greater than the listed value allows a further D3 to be rolled, with the result added to the total Strength of the attack. These Hits are not resolved at AP 2, but are instead resolved using the weapon’s AP value.
For example, a model with the Rending (5+) special rule that rolls To Wound against a non-Vehicle model will wound automatically on the roll of a 5+, and the attacking player has the choice of using an AP value of 2 instead of the AP value of their weapon.
Achean Force The controlling player of any unit that includes one or more models with the Psyker Unit Sub-type and a weapon or ability with this special rule, may choose to activate this special rule before making any attacks with that weapon or resolving the ability. To activate this special rule, the controlling player must make a single Psychic check using the Leadership Characteristic of any model in the unit that does not have the Independent Character special rule (unless the unit
is entirely composed of models with the Independent Character special rule, in which case the controlling player can select which of those model’s Leadership
Characteristics is used). If the Check is successful, then the Strength value of all attacks made with weapons or abilites with this special rule is increased by +2 (In addition to any Modifiers the attack or weapon may already posses), this benefit is applied only in the Phase in which these attack are made and ends immediately after that phase is resolved. If the check is failed then no benefit is gained, but the models in that unit may attack as normal.
All 'Achean Force' weapons are counted as 'Force" weapons for those rules that affect such weapons
