Castle from Hell ! (CASTLE5.WAD from CASTLE5.ZIP)

One of possibly many castle-themed levels that came during 90s, before maps have astonishing custom textures to enhance a map's visuals. In this map's case, while it may look and play enough like a castle (albeit a rather short one in height?), it's kind of drab to look at and there are multiple texture misalignments to be seen. Once you get inside the supposed castle, trying to reach the exit becomes a bit of a maze, where you would need to cross certain lines in order to progress through the map. However, you would come across odd issues.

In one room with Green Armor, you would need to cross the lines and score a secret in order to reveal one part of the map that you would need to access, however this also activates crushers in the room that also so happen to make the exit door stop short if you try to open it while the crusher is lowering, possibly leading to your death. One particular part that would stop you from completing the map entirely is a star with one line you would need to crush in order to reveal a switch in the room mentioned earlier. If you fail to cross this line, you would have the sectors surrounding the star lifting to the top of the room ceiling, and as far as I can tell, you can't lower these sectors again. If you get stuck on said star sector, you'll receive damage standing there and inevitably die.

The map isn't bad and there is some decent design to be had here, but the issues just mentioned plus other confusions hinders how well the level plays out.