The spear in the spider area below the bridge, and the spear left of area 6 Passage altar(near diary and lever).As for the missing weapons, I only missed 2, it is the 2 between "Elegance" and "Judgement" in the Weapon Info section in the church.
I unlocked everything in the game except for the enemy below "librarian" in the enemy list(not the gallery), can't unlock/find it no matter what. Already made 2 runs through all the game and can't find it. My guess is that it is the pleasure device that is bugged and isn't unlocking.