I'm working on a puzzle type map in Halo: MCC, and I would like some help with brainstorming ideas. The idea of the map is that a team of SPARTANs were exploring an ancient Forerunner facility, when it went into "lockdown" mode, and the SPARTANs must work together to escape alive. Other than that, I don't really have many ideas for challenges to put into the map. I want to design it around 3 or 4 player co-op, so try to give me ideas that require that many players to complete. If your idea(s) end up on the final version, I will give you credit. Also, if you want to help me forge the map, I will give you credit in the final version.