Yeah, I finally made it, the world is saved (for now...)
Thanks for all the help from Tabata, Axxes and Shadow and the other hints in this forum.
Some of the puzzles were really difficult, somehow I liked that, so it took me some long evenings to find out the solutions. As I said before, some games have much too easy puzzles nowadays, so you are through them pretty too fast! Although sometimes it wasn't too obvious what the game wanted from me, but the longer I played it, the more I understod the way these puzzles are constructed.
Really nice game, with a very unique style and atmosphere, afar from the mainstream, although with some little bugs and flaws - most of them already mentioned in this forum.
Romeo, hope to see and play more from you in the future, you really made a god job!!
Greetings from Germany,