Tunnels connect two points on the map. The alien commander builds them from the Tunnel menu in pairs: an entrance and an exit (8 team res each). Up to four tunnel networks can exist at once. Both ends must be on infestation.
- An alien who walks into one end comes out the other a moment later.
- A new tunnel end starts at 18% health and takes 18.5 s to build.
- Relocate moves one end to a new spot for 6 team res.
- Collapse destroys a tunnel after a 5 s warning; anyone still inside takes damage.
- Tunnels slowly mature into tougher structures (75 s).
Tips#
- A tunnel from the hive to the front line saves your team a lot of walking, but marines can walk through the tunnel too if they find it and kill the defenders.
- Put tunnel ends where marines don't patrol, and use one network per front.
See also#
Shift Echo (moving structures) · Alien commander