My cabal has experienced a lack of enemies on Cabal Extermination Missions for four times now. We run around but find no more enemies although the mission is not fulfilled yet. We even stepped into traps instead of destroying them, but this still did not deliver the 300 we needed to kill. Two times we had almost a tenth of the 'enemies left'-bar left.

Luckily the mission still counts against the cabal directive, even if we surrender instead of waiting 7 Minutes or more...