Fast but deadly, the Eldar rely on their long range and accuracy and their sneakiness. Their buildings can be used to quickly move across the map and their Commanders can be used to weaken groups of enemies before they are mopped up. Their vehicles have high damage and speed and can be upgraded with a variety of weapons but are fragile.
Differences from vanilla Soulstorm:
The Fleet of Foot ability has been removed and instead troops gain higher than average speed by default. Generally the Eldar infantry have been made more fragile to compensate for this and it is harder for the entire base to be cloaked or teleported to another location.
The Bonesinger teleport distance has been reduced to about half and its cost has been increased.Guardians can now choose to reinforce a Warlock, or either a Brightlance Grav Platform or Shuriken Grav Platform. These platforms have been removed as a singular buildable unit.
Fire Dragons mass has been reduced to about half of what it was before and their Fusion Guns now do high morale damage.
Warlock squad leaders no longer infiltrate until tier 2 (Soul Shrine).
Rangers are now capped at 3 squads instead of 1 and their damage, morale damage and accuracy have been greatly reduced until upgraded through researches.
Dark Reapers have been moved to tier 2, their damage has been increased and so has their cost.
Warp Spiders now start with Heavy Medium infantry armour and upgrade back to Heavy High infantry armour later. Their damage to Heavy Infantry has been reduced.
The Seer Council no longer has Commander armour and their maximum morale and cost has been reduced.
Harlequins are now in a squad of 5, capped at 1 squad.
The Farseer's Psychic Storm ability becomes more powerful later in the game and weapons can be upgraded through the Commander health researches. The Farseer also detects infiltrated units.
Fire Prism health has been reduced significantly and can be built in much earlier. They can no longer jump until Mobilize for War has been researched.
Eldar buildings each now require addons for them to be teleported to another location.Webway Gates each must have the Shroud add-on completed before it can cloak nearby buildings, instead of a one-time research.
Storm Guardians have been added as a melee equivalent to Guardians. They can upgrade to Fusion Guns (to provide anti-vehicle fire) or Power Swords (to improve their general melee damage). They cannot reinforce Grav Platforms like standard Guardians.
Dire Avengers have been added as a tougher more powerful alternative to Guardians.
Striking Scorpions have been added. Tougher, and slower than Banshees, they do more damage in melee and can can use Infiltration.
Swooping Hawks can jump around with their long range weapons but low health.
Fire Dragons can now reinforce an alternative Exarch with a Dragon's Breath Flamer for dealing with large groups of enemy troops.
Dark Reapers can now reinforce an alternative Exarch with a Tempest Missile Launcher for some long range anti-vehicle support
Wraithguards have been added to the Support Portal, available when Annihilate the Enemy has been researched. Tough and extremely powerful they are slow moving (they can reinforce a Spiritseer Warlock to improve their movement speed), have short range and are very costly.
The Autarch has been added which can be recruited once all the troop Aspect Stones have been built for an Aspect Portal. He has the ability to throw Plasma Grenades and Haywire Bombs and has high weapon damage but is relatively fragile. He later gains the ability to jump and then teleport around the field of battle.
The Wave Serpent transport has been added as an alternative transport with more carrying capacity than the Falcon which has had its capacity reduced.
The Nightspinner artillery tank has been added with long range disruption capabilities and its weapon slows enemy troops when it hits them.
The new alternative relic unit, the Scorpion Super-heavy Tank has powerful long range guns and a shield that reduces damage received. It can also upgrade its secondary weapon to Scatter Laser, Star Cannon, Missile Launcher or Brightlance.
The Cobra Super-heavy Tank is equipped with a single Distort Cannon which does massive damage over a wide area.
The Void Spinner Super-heavy Tank is equipped with a pair of Void Spinner weapons which fire similarly to the Nightspinner but is more powerful and deals high damage over time.
Warp Spiders now have a new ability Heavy Gauge Spinners to improve their damage against Heavy Infantry for a short time.Dark Reaper squads can now use Crack Shot to improve their weapon accuracy or Fast Shot to improve the fire rate of their weapons.
Rangers can use Fast Shot to improve the fire rate of their weapons as well. Fire Prisms now have the ability to switch between Scattered Beam (fast firing beams suited for anti-infantry) or Focused Beam (slow firing beams with an area of effect and disruption more suited for anti-vehicle damage).Banshees health has been reduced but now have the chance to receive no damage from enemy attacks.
Warp Spiders also gain the ability to receive no damage from enemy attacks.
Banshee Exarches now upgrade their melee weapons with the Call of War research.Falcons and Wave Serpents can now upgrade to Scatter Laser (a rapid firing laser good against Infantry), Star Cannons (for damage against Heavy Infantry), Missile Launchers (for light anti-vehicle and disrupting enemy troops) or Brightlances (for high anti-vehicle damage).
The Vyper can similarly upgrade to a variety of weapons.