Fellwing

Some Fell seem to evolve into winged worms, spitting corrosive slime as a ranged attack. A nasty, ugly, and very deadly combination.

Fellwing are small, flying Fell. They do not deal extraordinary damage, but in groups, they can kill many of your units. They can easily destroy melee units, due to the fact that they can fly and outrange them. They are not a significant threat and can be handled very easily later in the levels.

Strategies

 * Brawlers, Guardians, and Flamewalkers are unable to target Fellwing. This makes shellstorms and rangers essential for defending against them.
 * Snipers are not very effective against fellwing due to their low rate of fire and individual unit targeting. Therefore, it is recommended to avoid using them against fellwing.
 * Rocket Towers are very good against fellwing because of their high damage and AoE attack. This is especially useful because fellwing tend to bunch up in groups.
 * Engineers that have the tech "Ricochet" unlocked can wipe out clusters of them easily, because their attacks repeatedly bounce between multiple fellwing and deal damage to most in a single hit.