On the desert level, for the four levers on the far left of this area, in order to get to the red orbs, have all of them face left except the lower left-hand corner.
I don't get why everyone hates Dim so much. His levels are rather fun, and there are plenty of ones without invulnerable blocks. He just made a different kind of level.
I've been bombarding a hexagon with 12 dragons each month for five months now, and it still won't fall. The defensive buildings are too powerful, but this could be a good game if that was fixed. 1/5