Is the Seer really that hooded figure? The music for 100% Achivements says the Seers smile upon you. Unless the cheat statues are good seers and the challenge statues are evil seers. More importantly, I saw this playthrough where it seems like the Seer dosn't show up at all, in order to get that run.
So...are you sure that you need the Seer, or did it just happen to show up on your playthrough?