I know it's an old game, but I am told it's from here. Anyone able to give some tips?
I bought the guide but it's woefully incomplete. I've been unable to find the item needed to cross and get the coin in the house in Spiral.
First time through playing this I had two savant buttons by the time Cathan is locked up, this time I cannot remember who I fought to get them. I also can't unlock the safe in the developers room in the first forest of the game.
The spot to dig for the mirror left of Mina's house? Found it first time through after arduous looking, and I guess some luck. This time, I have searched exhaustively and cannot find it anywhere near Mina's house.

edit:Found the plank. There's a hidden cavern upper right after you come back from riding the dragon back from second world map. I'm wondering if the two savant buttons were just lucky drops off early bosses in my first run through.
2nd edit: Found the savant buttons. I forgot I needed to loot the chest near the building in the first forest to get a note. (Use that to unlock the file cabinet in the Developer's cabin then unlock the computer.)