Why a pain in the ass??
I find this a very nice puzzle!

There is a "Note" laying on the ground nearby one of the statues. You can read about all Statues are
lie! And that is the best hint of all times!
Me too search a long time, but it is for sure most funny to solve on your own ...
A help may be: write down all hints the statues gives you on a paper! (and/or make a picture)
Many people asks for this puzzle on this forum, many topics are already start

...
Some people think also this is a "bug" (or they have realy a bug?)
But I haven't seen any bug with quests or puzzles at all.