The Shadow Agent is a promotional unit available March 13 to 18, 2014, for 80. It boasts a relatively high dodge, and has a great variety of attacks.
The Shadow Agents first attack, Rappel, is a "backstab"-type and thus attacks from the rear of the battlefield dealing a fair amount of -type damage to a single target with a high critical chance versus Critters and Soldiers.
Its second attack, Laser Shot, is a straightforward pistol attack with 40% Armor Piercing and direct line-of-fire.
The third attack, Heat Seekers, is an indirect checker strike attack, dealing moderate damage to potentially 7 enemies.
The Shadow Agent also unlocks a useful attack at Rank 4, Laser Stun Shot, with a high critical rate against Vehicles, 65% Armor Piercing and a 100% chance to the target. This attack can be researched for 25.
Offsets of this unit are its low , inability to target Air Units, and its attacks are not great against most armored units.
The Shadow Agent is the second confirmed trainable female unit [1]. The other two female units being the Eagle Eye[2] and the Zombie Slayer which is stated as being female in the mission dialogues.
When the player's Shadow Agent uses the "Grappling Hook" her hair turns redder.
This is the third unit in the "Agent" category, the other ones being the Special Agent and the Field Agent.
The Shadow Agent seems to be wearing armor, but has no armor points.