If a rogue manages to catch an opponent off guard, their target will be less
able to defend themselves. This makes the target more readily hit, and allows
the rogue to inflict additional damage.
When a rogue makes a sneak attack, the target's dexterity bonus to AC is not
taken into account, and an additional amount of damage is inflicted on the
target.
"Sneak attack" is not a skill in and of itself, but rather a term used to
cover two specific thief skills: backstab, used when initiating combat, and
circle stab, used in the heat of battle.
* These two skills must be trained independently. Expertise in one does not
imply even familiarity with the other.
* These skills are affected by the type of armour you wear. Heavier armour
will increase the chance of failure in these skills.
* Some creatures (specifically undead, and those lacking any "weak points" in
their anatomy, such as slimes, oozes, and plants) are not susceptible