|Spikes don't retract. Please don't try it.|
|Build Time||15 seconds|
Spiker unleashes a shower of spikes at the humans trying to sneak past it.
- Don't build them too close to other buildings. Spikers can only fire all their spikes at once and will not do that if firing would deal more damage to aliens and neighboring buildings than to the enemy.
- Build them in such a way that the spine of the spiker is directed towards passing humans.
- Build them in vents or tight hallways.