The original post is fantastic and took a "I will never solo that one" to "this just might happen".
I thought I would share a few things that I have found over the last couple days.
Important Weapons -
Swords - Defiler of Virtue - Fey Slayer Katana (Double Strike/Armor Ignor) (25% ssi, 50% hit lightning, 30% hit Lower Defence, Stam Regen 2, FC 1, DI 60%), works wonders on the Satyrs and Centaurs. Now this weapon doesn't have any leaches so I carry a Shield with 30% Soul Charge, and am anal about the honor(not so much on 2nd level but definitely 3rd because you get that little mana bump), divine fury for stamina...along with EOO. These swords are out there for sale...running between 3-4 mil.
Archers - Ironwood Composite Bow - Few Slayer(Medusa Drop) (moving shot/Armor Ignor)- Solo can move through level 1 quick, Level 2 is a grind(takes me 9min 30s to hit enough Centaurs) so there is not alot of down time. 2 Archers might have a better time. I could not kill enough Satyrs to solo this spawn with 1 char. On a side note this bow rocks the first 3 levels of the Forest Lord spawn, because of the ridges( the monsters spawn on) and impassable trees to get to them. Centaurs are leve 3 here. Haven't tried a solo there yet (last was with 2 other people(no raid yeeaaa), but will work that once I get the Dreadhorn. Any Sampire worth his salt can kill Medusa in 45-40 min, and the bow is a fairly common drop, and there is also that possibility of the Slither Drop.
Level 1 - Works perfectly as original post
Level 2 - It seems they changed to AI of archers to run and shoot instead of swarm. Mouse wheel and chasing them down you can kill them in 1(with Armor ignor) or 2 hits. I vary, managing my mana since the weapon doesn't have any leeches. I run about a 6min per red candle. Use you time here and at about 5min with 4 whites, take out a couple Paragon Centaurs(with Honor) and get your mana up.
Level 3-Still have trouble here killing enough but the Defiler of Virtue certainly helped - Honor, Lightning Strike, Double Strike, Lightning Strike, Lightning Strike - Or if you miss then another double strike(honor is key here for mana)...don't us armor ignor because you get more points with double strike. I noticed that the initial reds I was running about 9min 45secs, but the 3rd candle of this level took me around 6mins...Not sure if there is anything to it though.
Level 4 - Works perfectly as original post
Twalo - Kicked my Sampire ass, so I went and got my bard and used Discord/Rising Collosses -
I recommend timing yourselves, if you are at 5min with 1 white at level 3...stop....use the next 5min to kill 2 paragon Satyrs and refresh your drink.
Note 1: The new legendary drops in Cov go a great distance...Hit level 4 and you can really deck yourself out in some serious mana Increase/Intelligence Bonus/Mana Regen...Pay particular note to your Phy resist(Satyr damage), Cold/Energy Resist-For the unfortunate strike from Cus. Just make sure u kill all the Centaurs...thay are looters, and they seem to like Legendary Artifact cursed items.
Note 2: Archers, this is a perfect spawn for collecting arrows...Blow through the first level, and kill centaurs and collect 75-80 per centaur with 2 hits from the Ironwood Composite Bow...you will be sitting at 10,000 in no time.
Well I hope I have provided something useful here....