Guild Wars: The Four Horsemen - Hero Guide under HM with a safer way (read description!)

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These builds can do the whole Underworld its not only to do this quest.
I really would love to take a few notes in the video but Youtube will delete them at january 2019 as far as I know. This is why I decidet to use the chatt - sorry for all the ingame messages every single message!
This is a quick guide with a few tips and things you should know before you get into the quest. Its a lot about timing and by far one of the hardest quests in the game.
If you do this under NM you dont have to help your heroes with the foes.
I recomand doing this under NM a few times to get a feeling for the quest and the timing! Time in NM is way more than in HM but it is still a good practice.

Things I didnt talked about:
set your heroes on "Attack"
your team needs a lot of damage in general to do this. I always use 3. Mesmers cause UW got beside the start everywhere a ton of casters. If you dont got "Zei Ri" use 2. Mesmers and another FoC-Nec or take an elementalist with a build like this: OgVEI8kIy1cCyBTPTn0/CkB6BA - you need a lot of rupts almost everywhere. Ofcourse the damage is not that high as it could be but it is still a good replacement. give him a "Air+1/+3ES" rune. Also a 40/40 set.
before you place your heroes check (in that case) the lab if its clear. A Dhuum can walk up and down or sometimes theres another patroul. Check that before. If you use any other reaper this is not necessary.
the 2. spirits at 8:22 are a "Bloodsong" and a "Pain" spirit. These are the only spirits that stay long enough to catch the enemies. Every other one would disappear before they arrive. The spirit spots are also important to ball them up a bit better.
you can always use the hero skills while you run to the first guys. So you can be sure the damage output is high enough.
at 10:00 catch the aggro of the horseman so the dryders behind him will use shower on you and not in the rest of the team. (better use "IAmUnstopable!" before catching his aggro cause otherwise you may get "Diversion" on that skill.
If you can micro splinter on you before catching the other side after the port. Press "F" and then just click on the skill.
watch your party after the port and if they catch a shower flag them away.

Micro all spirits before starting the quest and use "Painfull Bond" on each horsemen at the first side.
I was very unlucky my "Shelter" was down by fighting the 2. group but you see it was still fine.
Most of the time you have to kill the dreamrider before you can place the "RN-Spirit" at the shown spot. Will take you a few more minutes but it is worth it!
If you have any questions let me know or contact me ingame.
"Pa Pr I Ka"

Hope this will help you guys - best of luck while trying it!
:)