Was this beta tested? It's not an insult, it's a real question. What I'm about to say may sound harsh but it's not intended (if you know me and my style anyway.)
There's a problem with suicidal bosses in Boss Rush when you use mutators. When I don't use mutators, it works just fine. The second I flavour the game with anything but "vanilla", the bosses commit seppuku. If every other game type can get mutators to work......
In Fraghouse Reloaded, when you do an objective map: you complete the map, and the game keeps playing until you die.
In regular FHI, map FHI-FrigidDarkening: Nothing on-screen works. When you get that "next wave in 10, 9, 8..." etc. countdown, the numbers don't showup at the top. When you grab a weapon, it doesn't say "you picked up the <weapon name>." I didn't think this was even possible to do in a map.
There is a really dark map that takes place underground or in a cave or something (sorry for not remembering the name.) When you complete a wave on that map, it doesn't increment, so you're stuck at wave 1 forever.
How does stuff like this happen? If it were a problem across the board (on all the maps, not just one), it could be attributed to the mod, but apart from the boss rush thing these are all map-specific. I didn't know you could do things like that to maps.