Thanks! I've tried to signpost the way down with health bonuses but I believe I didn't on the harder difficulty. Admittedly if you just make a straight run for the castle you'll probably live and I didn't really add much on the way there to make it worth it going the longer route.
You're the second person to tell me it isn't compatible yet I used Doom 2 mode strictly and I did test along the way (not the lastest version tho, as I only had some minutes left haha). I will look into it tomorrow.