: If I remember correctly, Pfhoraphobia is designated as
: "Extermination" and "Exploration". Since you say that
: you have defeated all enemies, check to make sure that you have visited
: ALL areas of the level. Especially make sure you have walked through all
: of the long, snaky hallways. There is one in particular I remember that
: you HAVE to go all the way to the end or you cannot leave the level, even
: though that hallway may not have any enemies still in it.
The behavior of M1A1 is very different than that of the original M1. In the original M1 you only needed to see all of the areas, but in M1A1, which is based on the M2 source code (AO), you actually need to step on every required poly. If you open the map in Forge or Pfhorge, you can actually see which polys are the required ones.