I will reply to myself.

And to all of you who want bloodbaths in your witcher fights too

Here you are:
Hello there fellow witchers, if anyone of you ever dreamed about having a real bloodbath in The Witcher 3, then read what I’ve written below. It’s a step by step guide to make blood mods work together. There will be blood everywhere, like in Tarantino movies or even more. Two things must be said before we begin. First, I added blood on npcs effect (Geralt, monster and human enemies) to Brutal Blood mod. Ulug, the author of the original mod asked on mod’s page to not edit his work without his permission. I will try to contact him but he hasn’t been on Nexus since January. If he does not approve my edit, then I will remove it from this guide. Second, the blood on npcs effect is set to last for two minutes, as well as blood on the ground. My colleague asked me for it to be that way, but I can easily change it to one’s liking. And one last thing, you don’t have to use all mods from my guide. You can freely choose one, two, three or all of them and it will be still working great. So let’s start finally.
1.BLOOD mod – simply download it from
https://www.nexusmods.com/witcher3/mods/900, extract and place the ‘modBLOOD’ into your ‘Mods’ folder.
2.Brutal Blood mod – download my version with added blood on npcs effect from -
https://www.dropbox.com/s/b2hdnc8raj756ni/BrutalBloo4.0_Custom.zip?dl=0
Extract the mod you have just downloaded from dropbox and put all of its content (there are three folders) in your game’s MAIN folder.
(Be sure to download and endorse Ulug’s original work here -
https://www.nexusmods.com/witcher3/mods/2608)
3.More Blood mod – get it from
https://www.nexusmods.com/witcher3/mods/1549, extract it and place the modKNGBlood in your ‘Mods’ folder.
a)Now go into KNGMoreBlood.ws in mods/modKNGBlood/content/scripts/local and change the line
thePlayer.PlayEffect('covered_blood');
into
thePlayer.PlayEffect('character_covered_blood');
b)Also in this file find function GetTrailEffects() and comment out the first line of code in it. The whole function should looks like this:
function GetTrailEffects() {
//bloodFx.PushBack('default_blood_trail');
bloodFx.PushBack('cutscene_blood_trail');
bloodFx.PushBack('cutscene_blood_trail_02');
bloodFx.PushBack('blood_trail_horseriding');
bloodFx.PushBack('blood_trail_finisher');
bloodFx.PushBack('fast_trail_blood_fx');
bloodFx.PushBack('weapon_blood');
bloodFx.PushBack('weapon_blood_stage1');
bloodFx.PushBack('weapon_blood_stage2');
c)More Blood Fix – there is a fix in More Blood’s commentary section. I provide the direct link, so download it here -
https://www.mediafire.com/file/pb39d27hil65b16/KNGBloodFix.rar
Unpack the fix, there will be three folders. Choose modKNGBloodFixMoreBlood and put it in your Mods folder.
4.Ultra Gore 2 – download it from -
https://www.nexusmods.com/witcher3/mods/519,
extract and place ‘modUltraGore2’ into your Mods folder.
Additionally, if you are a GOG GOTY version user, download GOG Version Script Error Fix from Ultra Gore 2 files section. Unpack it and also place it into your Mods folder.
5.Now I recommend to run TW3MM with Script Merger with its unofficial patch. It will set priorities for you automatically. In Script Merger just merge script conflict between More Blood and Gore 2. Also will be done automatically. For those who use mods.settings file:
First BLOOD, second Brutal Blood, third More Blood, fourth More Blood Fix, fifth Gore 2.
6.In file user.settings (Documents\The Witcher 3 folder) change DecalsChance parameter to 10 instead of 1.
7.In-game go to Options\Mods\Brutal Blood and click on ‘enable’ preset or like me set all sliders to their maximum values.
8.Well done my friend, now a real bloodbath awaits you in your fights.
Still one thing to be mentioned. There is a guy who wrote in Brutal Blood’s bugs section that Nitpicker’s Patch and Community Patch - The Besserwisser do not work with blood mods. He is totally wrong. Everything works like a charm, and if you use just like me some armor mods then i will leave this comment of mine from Besserwisser nexus page here for you:
‘If (like me) you do plan to use armor mods then make sure to install Community Patch - The Besserwisser and Nitpickers - No Armors Edition, main version of Nitpickers for Besserwisser (with armors) and All NPC Scabbards 1.22 including DLC. Do not change their priority, it's fine by default. Why to install good old nitpickers? Because it gives you all its fixes such as Old High Quality textures and you can still use armor mods. Besserwisser's main version does not allow you to do so. I tried the following mods and I am delighted with the result:
Starting Armor and Swords (Kaer Morhen Set) cosmetic replacer for Witcher School Sets, Darker starting armor with its dark sword scabbards, All NPC Scabbards 1.22 including DLC, Black cloth under chains for Viper and Kaer Morhen starting armor, noHook and noShoelace from Fix Viper KM Armors mod, HD Chainmail for Viper Armors, Besserwisser - No armor edition and main version of Nitpickers.’
And if you are still here with me, then let me tell you I am not a native speaker, so sorry for possible mistakes in my English.
Cheers!