Faust explains the two endings in his final monologue. In theory, getting 100% completion could unlock another ending, but I doubt it. It would surprise me if there were more - I can't see anything else to do on the final map, and information does not seem to be transferred between the maps (inventories get reset, etc.), so I wouldn't even know where to look for a third ending. If anyone has any inputs, please speculate away! Did you shift your consciousness to the far past in a Lizard's body? Does that thing turn humans into lizards? (the statues hint that there were different kinds of lizards) Do you become a pawn to the Elder Ones? Again, I'm not entirely sure what happened here. But you do seem to turn into a lizard of some sort, prolly the same lizard people you've been meeting along the way.

The other ending you ignore the hallucionogenic, move forward into the ruins until you reach this weird structure which teleport you somewhere else. But what happens exactly? My understanding is that the main character keeps shifting his consciousness through time. The ending's name is also 'conarionaut', which hints at what it probably mean.

In one you take the mixture of that hallucinogenic plant beside Dr Faust's corpse, collapse then find yourself in his house where he utters that he has found the answers he was looking for beneath a desert - presumably the catacombs with the constellation puzzle which collapses you were in just a few scenes ago. Okay, so I've found two endings (out of possibly just two, I guess, would love if someone could confirm if there are more).

Conarium bjd