Okay, got it supergleeok.
Celeboy, you can't exactly just walk up and pick up the bottles as Tenebrae went down the lit path and Locke is the only one who knows they're there (unless he decides to tell you or you go find it yourself).
Locke picked up the three bottles that still contained liquid and put them in his pack, then started heading towards the lit path where he encounters Tenebrae, Tenner, Mizu, and Galt, as Shadow remains at the foot of the stairs. He sees a strange suit of armor-like statue thing, and runs into Tenner who was attempting to interact with the it to no success. Soon, Galt heads down the red path and comes into a room not unlike the red room above, a small, perfectly round room with a pedestal in the center. The only noticeable difference between this room and the one upstairs is the pedestal expands at the top like the letter "T", and there are two glowing red stones sitting utop it. Tenner encounters the same when he heads down the green path.