Diamond Rush Perfect Walkthrough: Tibet or Siberia Stage 8

This is the only stage in the whole game where there is a perfect message you can't get. It's IMPOSSIBLE to open both chests. Trust me, I even tried smashing ALL wall tiles in this stage searching for a hidden switch or something. I'd love to be proved wrong here, but I don't think it will happen...

I look at this unachievable perfect message as a joke from the developers. It's like they are saying "You can't always win", or "See how easy it is to screw things up? Now go appreciate all those other elegant, solvable puzzles we've created"...

About this walkthrough: I call it "perfect" because it shows you how to get the 4 possible perfect messages (all purple and red diamonds, no hits or retries) on every stage in the game.