
The area of Rotten Blood Quest is called “Blood Vestibule” and it consists of 4 sub-areas:
- Jared Roots (mini boss – Murcion)
- Putre Factory (mini boss – Ichgahal)
- Gloom Pillars (mini boss – Chagorz)
- Darklight Core (mini boss – Vemiath)
In order to fight with final boss Bakragore (yep, that’s the badass which drops new Sanguine & Grand Sanguine items) you will have to successfully fight will all of 4 above mini bosses.

To be able to enter mini bosses rooms, each player needs to charge “The Rotten Charges”. You will have to earn number of 100 before you can enter. You will gain 1 charge per every 20 seconds you stay in specific sub-area. It means that in worst case you will have to spend 33 minutes and 33 seconds in each area before fighting each boss.
The good news is that you can speed it up by using specific mechanics for each sub-area. There is one common mechanic for all sub-areas which are Large Spore Reservoir (for Jared Roots & Putre Factory) and Darklight Obelisk LOGO (for Gloom Pillars & Darklight Core). They appear in each are in numbers between 3 and 6. By simply using them you will shorten the charging time by 5 minutes (15 Rotten Charges per usage).
Each sub-area has additional mechanics reserved for itself which can shorten the time of Rotten Charging and which can also bring you death.

To speed up charging your Rotten Charges you will need to loot Organic Acid LOGO from monster Oozing Corpus which occurs in Jared Roots. Once you got that thing in your backpack you can use it on:
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by using Organic Acid on it, you will receive 1 Rotten Charge (+20 seconds)
WARNING:
After killing any monster in Jared Roots there is a chance to spawn Decaying Totem LOGO. It cannot be killed but it can easily kill you. It throws 4 spells, which are circle-shaped. First circle is small, but with every next spell it’s getting bigger and has bigger range. After the 4th spell is thrown, Decaying Totem simply disappears.

To speed up that sub-area you will need to loot Lichen Gobbler LOGO from monster Meandering Mushroom which occurs in Putre Factory. Once you got that thing in your backpack you can use it on Rotten Floor which looks like on a screen attached below.

By using Lichen Gobbler on it, you will receive 1 Rotten Charge (+20 seconds).
WARNING:
In bigger spaces of Putre Factory you will meet Radicular Totem LOGO. They might be very deadly for players because their wave spells will hit up to 6k Earth DMG!!! The good thing is that you are able to predict its hits. First Radicular Totem will hit a short wave, then the long wave in the same direction. Afterwards it will do the same, but rotated by 90 degress clock-wise. It means that full rotation (360 degrees) of it waves will take 8 rounds.

To speed up that sub-area you will need to loot Darklight Obsidian Axe LOGO from monster Darklight Construct which occurs in Gloom Pillars. Once you got that thing in your backpack you can use it on Basalt Pillar which looks like on a screen attached below.

By using Lichen Gobbler on it, you will receive 3 Rotten Charge (+1 minute).
WARNING:
You really need to be carefull and watch your Rotten Charge Count in this sub-area. After receiving 100 Rotten Charges, you will receive a strong energy attack (approx. 3k DMG). If players stay close to each other this spell can turn into a chain-spell, which means that it can jump from one to another 4 players. Every next chain-spell is stronger than previous one so you can easily imagine how deadly it can be.

To speed up that sub-area you will need to loot either Yellow Darklight Matter LOGO from monster Darklight Source or Unstable Darklight Matter LOGO from Darklight Matter & Darklight Striker which all occure in Darklight Core. Once you got that in your backpack you can use it on Darklight Pore which looks like on a screen attached below.

Note that if you use Unstable Darklight Matter you will receive 1 Rotten Charge (+20 seconds) but if you use Yellow Darklight Matter you will receive 3 Rotten Charges (+1 minute).
WARNING:
This sub-area is most difficult of all 4. As a proof I can mention many deaths of high-level players, and the most famous of them is for sure Bobeek (at that time he was 2373 ED). But to the point. All of monster which appear in Darklight Core can throw Dark Energy Bombs under players feet in shape of cross (3x3 sqm). These Dark Energy Fields inflict damage from Agony. This damage is some % of your current HP. Unfortunately I can’t clearly say how many % is that. This Agony curse will last 12 seconds. With every second of its duration you will receive damages of Agony which will be in amount half of previous. It means if you receive 2000 DMG in first hit, second hit will be 1000 DMG, third will go for 500 DMG as so on. The good news is that you can destroy Dark Energy Fields with a Destroy Field Rune.