Me and a buddy were playing Halo co-op last night and we got some ghosts deep inside some of the indoor environments. We even had to back down some small hallways to get them through. The bummer was when we got to an elevator the ghosts would fall through and hit the bottom of the elevator shaft (try being in it as it falls, or get out and watch it "sink" through the elevator).
Anyone else have this problem? If anyone can figure out a way to get those things up the elevators let me know.
PS. Co-op rules.
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