So, I’ve been having a weird issue with this achievement, and from what I can see nobody else is having an issue with this. For some reason I just cannot get the “This is not the Greatest Lab in the World” achievement to unlock. It just doesn’t pop. I’ve gotten into the lab maybe 5-6 times. I’ve done it on both PC and Xbox. I’ve done it both solo and co-op. And I’ve done it both from the beginning of the mission as well as from the rally point. No matter what, this achievement just will not pop. Has anyone else had an issue with this achievement, or possibly know something I can do to get this to pop? It’s one of the last achievements I need for Reach.
Edit: I just found this posting on another forum that resolved this issue for me. I figured there was some way I could delete my save data and try again, and this was it if anyone else was having a similar issue.
https://www.trueachievements.com/forum/viewthread.aspx?tid=1149222