The balr1405.zip file you have requested: Maps Levels Missions / balr1405 - 457.49kb is not available. Perhaps try browsing all files for the game Heretic II and upload any files you want to share or are missing. This is the only information we could locate:
There are about 9 or 10 small buildings you can enter, plus you can climb to the rooftops. Building interiors are cramped. This map features some interesting use of doors. It uses the standard textures.