Media Summary: When I first put the thumper down 5 mobs spawned, and that was it til the last 5% or so, then there were a couple waves of mobs.
Firefall Exploit Thumping Spot 4 - Detailed Analysis & Overview
When I first put the thumper down 5 mobs spawned, and that was it til the last 5% or so, then there were a couple waves of mobs.