HUNDREDS of enemies! Small, fast creeps swarm in groups of 20-50. Area damage towers are essential.
Splash Cannon (50g) - AoE each shot. Tiers: Heavy Splash → Cluster Bomb
Flamethrower (65g) - Continuous cone AoE. Tiers: Napalm → Inferno
Tesla Coil (70g) - Chain lightning. Tiers: Plasma Coil → Arc Reactor
Poison Gas (55g) - Persistent area DoT. Tiers: Toxic Cloud → Plague
Barricades (10g) - Wall segments to funnel swarms into kill zones.
Enemies: Zergling (1HP, fast, swarms), Exploder (explodes on death, damages towers), Spitter (ranged attack on towers), Breeder (spawns 3 zerglings on death)