Added Shock and Fire Troopers

I added Shock and Fire Troopers to the Infantry Barracks. Their blue and red equipment makes the two roles easier to recognize during a fight.

The Shock Trooper can hit its first target and arc to two more nearby enemies. Each jump loses damage, and solid cover blocks the chain.

“Two infantry weapons, with different ways to reach a group of enemies.”

The Fire Trooper attacks along a short, narrow stream. It can damage several enemies in that line, while buildings, rocks and terrain stop the flame. It does not leave burning ground behind.

Both units have their own models, voices and weapon effects, with previews and combat details in the developer database.