This was the first playthrough, so I may have missed a few of the dropped gem sticks, or maybe they were stuck in walls or something. But, it got to a point where the guys with the gems stopped spawning, and I didn't see any gems with blue arrows lying on the ground.

I was stuck completely battling an endless spawn group with no way to complete the mission.

Can you please make it where the gem weapons don't disappear after they are dropped? Or, maybe one of my teammates had them and didn't use them on the doors.

Anyways, I'm not totally sure what happened, but I was completely stuck on this mission, fighting an endless mob of bad guys, with no way to complete the quest.

This was a post .02 patch bug.