I made a remake of the classic N64 multiplayer map first seen as "Facility" on Goldeneye then "Felicity" on Perfect Dark. For a level preview please see the link to bungie.net where I have recorded a video preview of the map . You may notice that the two big cooling rooms are different to the original - this is due to running out of parts unfortunately. Also I would recommend increasing the player movement speed to 150% - I have personally found that it makes the map play better (Goldeneye/Perfect Dark movement was quicker so battles were more frequent) Map preview: Bungie.net : Halo Reach : File Details 87 Some more photos of the map
First, this was posted in the race section and second I took the embedded pictures and added them to your main post. Moved and edited.