Third floor of the desert basement, puzzle #3. This one has caused me the most frustration in the game. I've moved the water up and down dozens of times. Looked from every angle I can think of. Went up 2 floors and played with the light switch. Tried to trace the faint shadow in the ice/rock. I can't see how this is possibly a reflection puzzle. I've messed around with the back puzzles as well to no avail.
One of the village puzzles with multiple solutions. Got the light/dark one immediately, and the reflection trace soon after. No clue how to do the third one. The little sundial thing across the building does not appear to affect it.
Arboretum interior, puzzle #4. Two sets of branches overlay the puzzle, but they neither add up to a complete path nor a complete set of barriers. I've tried numerous paths assuming a broken branch is completed to no avail.
Village cellar, double puzzle. I assume the hexagons on the right have to go in order, but that still leaves dozens of solutions