REZERO

Thanks for the replies. Makes sense since their is a part that spawns heavy monsters. Now I guess I know where they come from!

I started replaying some of the DOOM games that I originally played a decade (or more) ago. I noticed that some of the maps in Final DOOM show areas that are not accessable. For example on Evilution Redemption (Map 10). There are areas to the North East (large open area) that shows on map, but no way to get there. Also on the main loop (with the red doors) the map shows two side doors. Does anyone know if these are for multiplayer only.