Firstly let me say that this has been the most enjoyable Grimrock Mod I've played so far.
In particular I like the changes you've made to things, and the fact that the puzzles aren't impossible to crack like they are in so many other mods.
Very impressive work
This is my first playthrough, and I've been to this forum for help and up until now the answers have been here.
Also I've found the 3-2-1 secret and killed the baddies in the secret area.
I have the four essences, three of which I've placed in the correct areas.
I am stuck in the laboratory / forest / castle / mines / wargland / swamp loop.
I can go through them all, collecting yet more blue gems etc, I've been through so many times there's pieces of pie everywhere, not that I need it as I have unlimited food in the forest from the 1000s of herders I've slain again and again.
I have been given verbal clues from the sleeping pirate in the town, and the witch in the swamp.
Upon returning once again to the lab I dispatch the dark robed figure again and seem to be back to square one.
The only other possible exit I can find is from the mines to a castle courtyard where I am attacked by a lot of robed figures, I could deal with them but I seem to get frozen to the spot, then eventually die.
I just know I've missed something obvious.
Help would be appreciated!