Tome can also spawn in the top left dead end in the top maze!!

@CellarPhantom I'm sorry, but I failed to pass the Nightmare mode also on the first try. Unfortunately, I see Greg this time. I didn’t see 10 of them, but at some point, when I gathered around 4 in the main area where the coffin is, I entered the maze to shake them off. But inside the maze, there was already one there that I didn’t know about. He cornered me in a dead-end path while I was trying to find the exit inside that maze. I mean, I was taking a chance. And at that moment, that's when I earned the achievement of touching Greg for the first time.

The Chosen One failed for the first time..

@PetroOC22 You are the chosen one!

Dude, I followed the guide and somehow beat the game on my first try. I didn’t run into Greg at all, no idea why. Maybe I bugged him out by clicking on the coffin and the orb a bunch of times, but somehow I got all the tomes, every key worked on the first try. No errors. And when I looked for the first true exit, I found it. On my first try. I had no difficulty at all. I don’t understand how I got so lucky. Maybe... I should try insane mode now. If I manage to beat that on my first try too, I’ll post here!

The top left dead end in the top maze is also a potential tome spawnpoint
Incredibly helpful guide!

I can confirm that tomes appear in pots. Any pots. I got one in the starting room, where the tutorial is.

just won on nightmare, some tips,

.never had a tome spawn in the same area of the map, top maze and lever room, stone room and coffin room all seem to share on tome pool, if find tome in lever stone room or pots, just go bottom maze, middle maze for the other to save time.

.enemies never spawned until 2 keys picked.

.I did a different order or keys, middle maze, then top lever room, jumped down to bottom of lever room, run towards key and try to agrro as many gregs as possible to keep them from populating upstairs area. make way to stone key, retun to middle and place them in the order, 3,1,2,4, then hope for good exit locations

.other exits are near key in lever room, and around bottom maze walls

.use stamina effectively, NEVER fully deplete it as you lose sprint for a bit. do short burst of sideways moving sprints, unless you really need to make some distance. try an have a lot of stamina to avoid being trapped leaving lever room and between middle room and stone room

I just won the game for the first time, 7 hours into the game. I can add that there's an exit spawn SOMEWHERE in the bottom maze. It can be helpful for people who struggles to find it. I NEVER found an exit in locations marked on the map in the guide.

So go try finding it in the bottom maze my dudes.

doing my second run of the game now (first was just to figure out key locations without help... i'm here, so i'll let you figure out how that went), and i can confirm the tomes can spawn in the pots. i just picked one up in the stone room; leftmost pillar at the back of the room.

Just beat the game, there is an exit in bottom maze by going RRLRLLRR and the room was there (R meaning right and L meaning left)