Extra detail about an area in the game for if you get stuck (warning: spoilers)
In the Ice Sector, the maze is incomplete in terms of playability. The staircases are still programmed from how I was testing them (I forgot to change it).
Guide: Walk to nearest staircase after entering dungeon and descend. Go back up the closest staircase. Go down staircase you came from. Go up (direction) the map to the downstairs staircase, and you're at the second basement floor. Head directly forward and begin the battle with the ice vampire.
Sorry I had to make this! I'll be more careful in the future.