For me, it took about twenty three waves for the map to spawn, but it could have just been due to bad luck. You just wait for that laboratory map to spawn and survive the entire wave to earn the event badge.
@@Yoshi244 no like do you need to beat it multiple times to get all the other rewards? I was told that the reward you get is based on chance so there’s a chance that you won’t be able to get a certain skin. If that’s true that’s pretty stupid and a horrible mechanic.
You basically need a group of good players who understand what they are doing and be sure to have someone use a scapegoat, otherwise, you probably won't be able to be victorious in hard mode.
I was unable to upload videos regarding the past three updates due to some unfortunate circumstances, however, I have showcased pretty much all of the content I have been absent for by cramming everything into this video, which also includes the newest update's content.