Lua Exterminate Bug

[shadow0727]

Earlier i was in the lua crossfire exterminate mission and no enemies spawned for the first 5-10 minutes. We finally managed to get 56 or 57 of the required 75 enemies to spawn. We found a rare orokin crate with a mantis avionics bp but had to abort the mission as we got stuck behind a closed part of the challenge room and lost everything.