I made a Forge Map with a Light and a Dark World where players use equipment to travel between them. Light Bridges and Grav Lifts change depending on which world you’re in, as do weapon spawns. You’ll need to travel between worlds multiple times to get certain weapons. The video I’ve included shows it off.
https://www.youtube.com/watch?v=oO06Yy63-TE
If you want to try it, here’s a link.
https://www.halowaypoint.com/halo-infinite/ugc/maps/7f4dec23-6b19-45b8-afcc-023f458afcb6