An in-depth Solo Spectral Throw build with IR US RT IG & Three Auras!

12/8/2013: Updated skill tree, skill gems, my gear, my flasks and added a build summary.
11/13/2013: Changed from mace to axe to passives. Updated gear and skill tree.
11/3/2013: Removed Blood Magic Keystone from build

Pros
-Decent amount of life
-A lot of gems can be found from quests
-No expensive uniques required
-Easy to maintain in combat
-Fairly high damage and survivability

Cons
-For this build to really shine, you will want a five-link for Spectral Throw
-Not much room for Increased Item Rarity stacking

Skills
-Double Strike for single target
-Spectral Throw for AOE
-Endurance charges for increased defense
-Frenzy charges for increased attack speed
-Leap Slam for mobility
-Haste / Grace, Purity of Elements, and Hatred for increased attack speed, armor, resists and damage, respectively
-Warlord's Mark, Vulnerability, and Enfeeble for additional Life Leech, increased damage, and decreased enemy damage, respectively.

Current: Level 83

*I'll be getting rid of Blood Drinker (2% Life Leech) when I can add Life Leech to Spectral Throw.

(Obtain in this order)

Six-link: Spectral Throw > Lesser Multiple Projectiles > Life Leech* > Blood Magic > Added Fire Damage > Weapon Elemental Damage or Life Leech, Faster Attacks, Increased Item Rarity

Six-link: Double Strike > Melee Physical Damage > Multistrike > Blood Magic > Added Fire Damage > Weapon Elemental Damage or Life Leech, Faster Attacks, Increased Item Rarity

Four-link: Leap Slam > Blood Magic > Enduring Cry > Blood Rage

Four-link: Warlord's Mark** > Vulnerability > Enfeeble > Blood Magic

Three-link: Grace or Haste*** > Hatred > Purity of Elements > Reduced Mana

*Life on Hit is better than Life Leech in the early stages of the game. You will want to switch over in Cruel.

**Since I don't have Life Leech attached to either Double Strike or Spectral Throw, I find that using Warlord's Mark from time to time helps a lot.

***Switch out Grace with Haste when doing maps that don't require a lot of Armor.

Remember to ALWAYS put gems you plan on using in the future in spare sockets.

Run through Normal with Heavy Strike and Ground Slam. If you're having trouble with Act 3, run docks 'til level 35.

Do the same for Cruel. Run Fellshrine to 45, Docks 'til around 48, if you're having trouble. Cruel is about the time you want to switch Ground Slam with Spectral Throw. Make sure you have Lessser Multiple Projectiles, though, before switching.

For Merciless, Ledge until 53. Fellshrine to 57, and docks to 61 (or until maps.) Do Lunaris or Library until your desired mapping level.

Uniques that you may want to use
Helms: Alpha's Howl, Devoto's Devotion
Amulets: Carnage Heart, Astramentis, Eye of Chayula
Weapons: Marohi Erqi, Reaper's Pursuit
Rings: Andvarius, Death Rush, Le Heup of All, Ming's Heart
Belts: The Magnate, Perandus Blazon, Headhunter, Meginord's Girdle
Gloves: Aurseize
Boots: Goldwyrm, Windscream

As for rares, focus on Armor / Evasion, Life, and Resists (try to get a lot of chaos too) for defenses. Squeeze in some Attack speed, Life Leech, and Intelligence / Dexterity on your jewelry if you can. Don't forget that you can get Attack Speed from gloves. Try to go for an Increased Physical Damage belt too. As for the weapon, obviously go for the best possible physical damage and attack speed.

Normal: +40 Life (Oak)
Cruel: +8% Attack Speed
Merciless: +1 Maximum Frenzy Charge

I'm going for attack speed because Kaom's Primacy only does one attack per second. If you have a weapon that does 1.3+ attacks per second, then I would suggest going for the extra skill point in Cruel, and an Endurance charge in Merciless.

Q: Why are you using a 2H axe? Why not a mace, sword or staff?
A: I decided to go 2H because the projectiles are bigger, thus hitting more enemies. I'm going axe because I want to use Kaom's Piracy. It offers quite a bit of damage and Culling Strike. Go mace if you want Stun Duration, sword for Accuracy, or staff if you want to stack Block.

Q: Does Spectral Throw shotgun?
A: It use to, but was changed pre-release. They buffed the damage to make up for it.

Q: Does Point Blank work with Spectral throw?
A: From what I've been hearing, no, not correctly. But it'll probably be fixed.

Q: Greater or Lesser Multiple Projectiles. Which is better to use?
A: It appears the community has unanimously decided that Lesser Multiple Projectiles is better, and I have to agree. Greater Multiple Projectiles reduces your damage a little too much.

Q: How does Slower Projectiles work with Spectral Throw?
A: The slower the projectile, the more it hits. Also, I believe the projectiles don't travel as far with Slower Projectiles. I'll probably choose Slower Projectiles over Faster Attacks if they ever fix Point Blank. Should make for an interesting combination.

Q: What works with Spectral Throw?
A: Melee Physical Damage, +Melee Weapon Range (Master of the Arena notable), or Cast Speed DO NOT work with Spectral Throw. Physical Damage, Physical Damage with Weapons, Projectile Damage, Projectile Speed and Attack Speed all work with Spectral Throw.