Hidden Path Entertainment have showcased a new map type for Defense Grid 2 – One that wasn’t in the original game. Defense Grid 2 introduces new worlds and threats to test your tower placement strategies and this maptype will be a part of that.
A “fixed path” is a road to the cores where you can’t change the alien’s approach. In these situations, look for locations where the damage from your towers can reach multiple paths and damage the same alien multiple times on its march of the cores. Creating “kill zones” with multiple towers together is an effective strategy on a fixed path.
You can view the trailer for the Defense Grid 2 map type, here: