Sortie 2 Defense mission bug

[Opetyr]

My team and I just killed everyone on the second to last wave of this sortie.  First there was no way to tell where radiation was which is stupid but this was even worse.  The game would not go to the last wave to finish the sortie so I wasted my time doing something that shouldn't have been an issue.  Maybe add a timer if after a certain time all enemies on the map are killed and start the next wave.  We probably sat there for 5+ minutes trying to see if there was an invisible enemy somewhere.