Happy 200th anniversary!
I didn't read all 200 but I will assume you didn't really repeat yourself so I will say that I'm surprised you left Achilles last, kind of the obvious Greek Warrior candidate also requested many many times. :D
Since you mentioned others making god concepts, I actually thought about how Achilles would be in Smite for a while, so here is my take on it:

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Title: Hero of the Trojan War (I don't know a better title)
Pantheon: Greek
Type: Melee, Physical
Class: Warrior
Pros: High Defense, High "Freedom"
Difficulty: Hard

Health: 470 (+80)
Mana: 235 (+40)
Speed: 377 (+0)

Range: Spear 15; Short Sword 12 (+0)
Attack/Sec: 1 (+1.1%)
Damage: 35 (+2) + 100% of Physical Power
Progression: Spear 1/0.75/1.5; Short Sword 1/0.75/0.5 damage and swing time

Physical Protection: 19 (+3)
Magical Protection: 30 (+0.9)

HP5: 7 (+0.75)
MP5: 4.6 (+0.45)

Passive - Blessing of the River Styx

• Achilles was dipped into the river Styx by his mother which made him invulnerable everywhere but at his heel, the place where his mother held him. Achilles takes decreased damage from all sources unless it is dealt to his back.
  Ability Type: Buff
  Damage Reduction: 10%
  

Ability I - Spear Thrust (Shield Knock)

• Spear Thrust: Achilles thrusts his spear forward, penetrating and dealing damage to everyone in a line.
  Shield Knock: Achilles bashes everyone infront of him with his shield, knocking them back and stunning them for a short duration.
  Ability Type: Line (Cone)
  Range: 45 (20)
  Cost: 65/75/85/95/105 mana
  Cooldown: 16/15/14/13/12 seconds
  Damage: Spear Thrust 90/145/200/255/310 (+90% of your Physical power)
  Damage: Shield Knock 70/110/150/190/230 (+30% of your Physical power)
  Knock back range: Shield Knock 10 units
  Stun Duration: Shield Knock 1 second
  

Ability II - Hold the Line (Irregular Combat)

• Hold the Line: Achilles takes cover behind his legendary shield crafted by Hephaestus, in a defensive stance and becomes an unrelenting obstacle. While using Hold the Line Achilles is immune to knockbacks, knockups and pulls, his Passive is increased and his hitbox grows to twice as wide allowing him to body block more effectively but become easier to hit. Additionally he gains a movement speed penalty due to his form. This is a toggle ability that remains active until used again or Achilles uses any other abilities with the exception of Spear Thrust. The cooldown starts once Hold the Line is deactived.
  Irregular Combat: Achilles as a great warrior can break away from the usual tactics of combat if necessary. He drops his shield to gain agility and additional combat prowess with his short sword at the expense of defense. When this ability is actived Achilles is cleansed of Movement and Attack Speed debuffs. His Attack Speed increases and his Basic Attacks deal additional damage in a cone. The ability immediately ends when Achilles switches stance. Achilles cannot use Shield Knock while Irregular Combat is active.
  Ability Type: Buff
  Cost: 60/70/80/90/100 mana
  Cooldown: 18 seconds
  Duration: Irregular Combat 5 seconds
  Damage Reduction: Hold the Line 2/4/6/8/10%
  Movement Speed Penalty: Hold the Line 50%
  Attack Speed: Irregular Combat 10/15/20/25/30%
  Damage per Attack: Irregular Combat 30/40/50/60/70 (+20% of your Physical Power)
  Protections Lost: Irregular Combat 5/10/15/20/25
  

Ability III - Greek Warfare

• Achilles is an excellent warrior, a master of the greek warfare. He wields the signature armory of the greek warriors: a short sword, a spear and a large round shield, switching between their usage as needed.
  Upon activating this ability Achilles switches between his main weapons of Spear and Short Sword. This changes the effect of his abilities, giving him different basic attack progression and range, and applying different passive benefits. Switching Stance also cleanses him of Disarm.
  Ability Type: Buff
  Cost: 0 mana
  Cooldown: 1 second
  Spear: Penetration 5/10/15/20/25
  Sword: Movement Speed 3/6/9/12/15%
  

Ultimate - Fate Defying Rage

• Enraged over the death of his beloved companions, Achilles defies fate itself and sets out to destroy all of his enemies in a reckless rampage.
  When this ability is used Achilles gains Crowd Control immunity, increased Power and increased Attack Speed for each dead allied God but loses some Protections for the duration. This ability can be actived under any circumstances and cleanses all debuffs and CC upon usage. The buffs are based on the number of dead allied Gods at the moment of the activation of this ability. Achilles cannot use Hold the Line while the ultimate is active.
  Ability Type: Buff
  Cost: 100 mana
  Duration: 6 seconds
  Cooldown: 100 seconds
  Physical Power: 5/10/15/20/25 per dead allied God
  Attack Speed: 2/4/6/8/10% per dead allied God
  Protections Lost: 10/20/30/40/50