Some voodoo doll trickery is surely done for tracking which altars were used (for skulls, keys and arms) - after you press BFG switch it is checked if you also have any skull key (doesn't work after you get just a keycard). Surely not a bug, but I was also confused at first.
I started playing Wormwood 5 as suggested by README, from HNTR. Got to the end, found many rewarding and fair secrets, almost closed the game satisfied... But I wanted to learn more about curse system. The second time around, on UV (curse level went from 0 to 6 from the beginning), I went to mentioned by @Snikle Chasm-like area... which isn't Chasm-like if you go there earlier! This is so incredibly much more replayable than your average DOOM wad.
Do I get it right, that only difference between difficulty levels is starting curse level?
I'm still in awe, even though I had sky-high expectations from another Wormwood. Ribbiks, GOS, congratulations.
