The maps and the weapons are, as I've stated before - part of unreleased DLC packs. The maps are part of the RAID Map Pack 2 and there's another weapon set that hasn't been fully listed in the code of the game, but they are all actually sitting in retail files - seeing as it looks like Capcom patched the map pack 2 into the last PS3/PS4/360/X1 update, but the files have been in the PC version for a while now. They were also supposed to patch in Monster Neil as a playable alt in RAID back with Pedro and the like, but that has yet to happen. There's also some debug models and other crap floating around, but this is still that you'd need to actually look in the data for to enable.
No idea but I'm sure if they are then they're either DLC or in the game but changed slightly. Someone that played this game would know for sure.
