TL Note: There are entries for other characters, but I've only translated the king's part so far. Please excuse me, but I really find translating this sort of chapters to be... tedious. I'll add the others in as a note if necessary, although I doubt it ever will be as the author usually explains them again anyway. Also, this is supposedly still under volume 1 in the raws, but it didn't really make sense with the previous character introduction, so I'll be adding it under the second volume.
Class King; Ruler
Possessed Skills Ruler of the Demon Children of Chaos; Defiant Soul; World Devouring Howl; Swordsmanship A-; Dominator; King's Soul; Ruler's Wisdom III; Household of the Gods; One-Eyed Snake's Evil Eye; The King's Dance at the Edge of Death; Magic Manipulation; Soul of the Berserk King; Third Impact (The Third Chant); Instinct; Blessing of the Underworld Goddess
Divine Protection Goddess of the Underworld (Altesia)
Attributes Darkness; Death
Subordinate Beasts High Kobold Hasu (Lv1); Gastra (Lv20); Cynthia (Lv20); Orc King Bui (Lv40)
Abnormal Status Blessing of the One-Eyed Snake; Protection of the Twin-Headed Snake
Ruler of the Demon Children of Chaos
-Charm towards tribal goblins (HIGH)
-The abilities of goblins under your rule are increased. (MEDIUM)
-The effect of the charm on a subordinate will wear off upon their death unless the goblin is an adherent.
World Devouring Howl
-If the target is of a lower class, spells and magic can be interrupted.
-AoE Radius of 500m
-Sword skill just a step away from the apex.
-Increases the maximum population that can be ruled (HIGH).
-Charm toward species other than goblins (LOW)
-Directives to those directly under you are absolute.
Ruler's Wisdom III
-When engaging the enemy's leader, damage received and dealt are increased.
-When dueling, if both parties have named themselves and are using the same weapon then strength, agility, magic power, and defense will all rise.
-When dueling, if the opposing party is defeated without killing him, then charm toward him will increase (MEDIUM).
The King's Dance at the Edge of Death
-Deal double the damage incurred to the enemy.
Soul of the Berserk King
-Increased resistance against mental attacks (HIGH)
-When dueling the damage received is reduced while the damage inflicted is increased.
-The mind will incur heavy mental damage while the skill is active, but in exchange, the damage incurred will be reduced and the damage dealt will increase.
Blessing of the Underworld Goddess
-Charm toward those who have received her divine protection (MEDIUM)
-Hate from those with the light attribute (LOW)
-Charm toward those with the darkness attribute (LOW)
Blessing of the one-eyed snake
-Stamina regeneration (MEDIUM)
-Ether is easier to control
Protection of the Twin-Headed Snake
-Stamina regeneration while fighting in the Fortress of the Abyss (HIGH)
-Stamina regeneration while fighting in the Forest of Darkness (LOW)
-The growth rate of the goblins under your leadership (LOW)
HOW DO SKILLS WORK?
For example, the Ruler of the Demon Children of Chaos gives an increased charm of (HIGH).
The (HIGH) here indicates the degree of effect of the skill because it is a passive skill, a skill that is always working.
Let's look at another skill. The skill Martial Barrier has the chance of ignoring damage incurred (MEDIUM) while also passively increasing defense (HIGH) at the cost of increasing the strain on the body (MEDIUM).
In this case, the (MEDIUM) of the first effect affects the probability of the temporary invincibility as it is an active skill, a skill that activates once in a while and is not always active. For reference: (LOW) 10-30% (MEDIUM) 40-60% (HIGH)70-90%.
To sum it up, remarkable skills such as this one which can render an attack meaningless has a chance of failing. But, in the end, whether a skill is strong or weak on paper, their actual effect will depend on the one using them.