It's a distinct type of OSRS GP Pure which was not created by simply leveling skills but was a result of completing Nature Spirit quest. A player with 13 Defence are typically aiming to complete Recipe for Disaster quest to get Adamant Gloves. They provide high Attack and Defense bonuses.
Furthermore, 13 points in Defence permit them to take on Black equipment and a Slayer Helmet, improving their defensive skills more. It enables them not only to be more dangerous in PvP, but also to be more efficient in combat in PvE, which allows them to main these account and also to develop skills that are not related to combat. It's also worth noting that the 13 defence Pure typically sacrifices a some levels of Attack in order to achieve an lower level of Combat.
Rune Pures are accounts that have 40 Defence, which is the minimum requirement to equip items from runite the level. They can also sport Dragonhide Body and Fight Torso to enhance their defensive abilities. Also, 40 defence is a requirement to complete the Lunar Diplomacy quest, which provides players with access to Vengeance - - one of the most effective PvP spells in the game. F2P players generally prefer this type of build, as Rune Armor is the best choice for them to have. On the other on the other hand, tend to choose between Void or Berserker builds.
Sometimes referred to as a Zerker or just generally referred to as Zerk. It is a variation of Rune Pure which utilizes 45 Defence to allow players accessibility to Berserker Helms or Fighter Hat. Since they offer better bonuses in comparison to Rune Helm, the extra 5 levels of Defence are preferable. A majority of Zerkers are also able to complete Recipe for Disaster for Barrows Gloves, which are among the top slot gloves available in the game.
It is the type of account that avails of Void Knight Armour bonuses to score high hits and maintain an extremely low Combat Level. Void Pures typically are rangers , since Rune Crossbow is already painful and when combined along with Void Knight equipment can be even more dangerous. Void Pures are also more secure to play with than regular accounts , as they're not at risk during fights.
Void Knight equipment is OSRS gold untradeable so it cannot be sold at lower Wilderness levels. The players who opt for this route, usually focus on getting advanced Ranged levels, while keeping low melee stats. Defence level is often identical to Zerkers and so is at around 45 levels. In this case, the normal Combat Level of Voider is between 70 and 100.