Usually, bottles mean that there is a enterance to a secret somewhere. That is what makes the game easy, is that in AO, you had look on every screen to figure out if there was a secret. This one, almost all of the secret are seen through a bottle somewhere. But it's more easy when you have Quiksave, but that is something else I will tell another day.
Or, if you can't find them all, use this walkthrough:
http://www.gamechronicles.com/guides...s/exodtext.htm
Remember, only use this when you already completed the game. Anyway, you still have some bizarre trouble with the game, just pm me, and I will tell you a secret about the game, that does not involve any cheats.