How far in the game am I ?

Hey,

I wanted to finish the game without outside help. But lately I'm a little stuck and would like to know haw far in the game am I. Could someone please just tell me without spoiler if I'm close or I'm still far from the end of the game?

Minor Spoiler:

!I have currently 7 red letters and 7 sanctum keys.!<

Major Spoilers:

!Last sanctum key I'm missing is the one with the king clue from room 46. I'm currently missing 2 rooms from the dictionary. Right now I'm stuck on two puzzles. The blackbridge admin cave - I have dug 1 micro chip and found second place for them in the apple garden. Second puzzle is the CASTLE think with chess. I manege to castle with the king and rook and open the clock puzzle inside the room with mora jai boxes. Currently trying to get the blue tent memos as I don't know where to continue!<

So should I continue to play spoiler free or I'm still far from the ending and there is no way I can finish it?