I'm going to write this down.
Maybe even make a copy to hand out to each and every person ever corrupted or affected by the Corruption.
This is a written documentation of all I have discovered of the Corruption.
Levels of Corruption
Tertiary - You have been cut by a corrupted weapon or you have had physical contact with the Corruption itself. It has already stolen a part of your power. It will replicate into your entire body until it infects you on a cellular level. It will do nothing else until you die at which point the billions of tiny tiny pieces return to the main body. It will not taint your soul or your mind. It can only be detected with precise scanning.
Infected: Many, but most notably my ex-demigod brother, Alrion. Ha!
Secondary - You have the Corruption within your brain. This ooze is seperate from the rest of the Corruption. It can physically manipulate the brain by stimulating (magically, I assume) the pain, pleasure and addiction centers of the brain. It can cause your minor twitches within your body through involuntary reflexes. It, once again, does not affect your soul. Nor can it actually control your movements or emotions, however it can cause you to laugh or cry. Those infected this way come under the Corruption's 'official' protection, or so I am lead to believe.
Infected: Quite a few, most notably Cloasse Galletti, Gayle Rue and Whisper (who I believe has another name I do not know), and I'll explain below why they are the most notable.
Primary - We have been given a weapon that of which you can use against others to cause a tertiary corruption. We most certainly fall under the Corruption's protection. Half of us have the Corruption in magic. Why, I do not know.
Infected: Myself (with magic), Mary Bloodtear (with magic), Caja Luna Kayriel (without magic), Solange (without magic)
On The 'Chosen'
The Corruption has chosen three, possibly four individuals for the secondary level of corruption. They are Cloasse, Gayle and Whisper. I do not know why, so I wish people would stop asking. The Corruption does not tell me many things. I can tell you the following. It has only chosen people who do not wish to be corrupted, those who rebel against it.
At the same time the Corruption seems to preach that it wants people to be loyal to it and is trying to help some of them to do so. Naturally, I believe such an idea is false, but I have no proof, just suspicion that the Corruption is still screwing us all.
Magic
Much to my and it's frustration, the Corruption does not have healing magic in any form. In fact, most of it's magic manifests in directed attacks. The extent of my powers include launching bolts, causing a pulse of it around me to deter close range attackers and the most exotic use I have of it is creating a black mist. I believe this mist is not of a magical property, but physical, meaning no one can see through it, not even those that can see in the dark. From this I gather that the Corruption is completely unable to perform tasks that involve creating, but specialises in destroying. Even if it truly has the power of a god it has it's limits.
Other
The Corruption is a magical ooze. It can only sustain itself in the real world for a short amount of time for some reason. I do not know why. It's home, from what I have gathered, is in space. There it has made a 'realm' of it's own where it's body is the walls.
The Corruption has an eye. A large gross dripping thing. I don't wish to speak on it, but I guess I must. It can see straight into your mind and drive you mad, bring your worst fears to light. It's a horrendous addition to an already disgusting creature.
The weapons from the Corruption are magically enchanted to be unbreakable and can infect on a cut. Some have a magical augments, for example mine leaves a cold affect to the cut. My brothers weapons (which I believe are lost) caused the persons heart to skip a beat.
I will add to what I know when I learn more.
But this is all I know.
Regards
-Drakus