Runes 101:
Runes are the basic most important building block of the power system.
Runes can be used in a lot of things, they can be absorbed, used to forge weapons and even give racial traits of other races.
For every hunter there is an upper limit for how many runes they can absorb, it increases with an increase in their hunter rank.
Types of Runes:
1 - Elemental Runes: One of the two most common types of runes, they give the user power of said element.
2 - Stat Runes: The other most common type of runes, they give the user a set increase in one of the stats corresponding to what the stat rune was for.
3 - Skill Runes: Runes which gives skills which no stat rune and no elemental rune can give, they have a low chance of dropping.
4 - Void Runes: A very special type of Skill Runes which is considered as a separate type. These runes are dropped by the beings in The Abyss, such as the Demons, Demon Kings and other things which dwell inside the Abyss. The rest of the types will be revealed later on as they would be spoilers.
Elemental Runes:
Elemental Runes are the runes which give the user the ability to use a certain element.
The main elements are:
Fire
Ice
Wind
Earth
Light
Shadow
Rune Grades:
Basic Rune -> 1 skill unlocked at Level 1
Common Rune (5 Basics combined) -> Unlocks 2nd skill + upgrades 1st skill to Level 5
Uncommon Rune (5 Commons combined) -> Unlocks 3rd skill + upgrades 1st skill to Level 10, 2nd skill to Level 5
Rare Rune (5 Uncommons combined) -> Unlocks 4th skill + upgrades 1st skill to Level 15, 2nd to Level 10, 3rd to Level 5
Epic Rune (5 Rare's combined) -> Unlocks 5th skill + upgrades 1st to Level 20, 2nd to Level 15, 3rd to Level 10, 4th to Level 5
Legendary Rune (5 Epics combined) -> No new skills, but maxes skill levels and grants Elemental Mastery Bonus (passive buffs like immunity to own element, increased damage scaling, reduced mana cost) - At this point the user can freely control and shape a certain element.
Note - A person can have multiple elemental runes and could be a master for more than one.