Heroes in order of first use: Priest → Hero. Pieces that end up somewhere new: both crystals and one of the 5 mirrors. 4 other pieces stay where they start.
Pieces that end up somewhere new: all 4 mirrors and both crystals.
Hint 2
Start: push the right top-left mirror down 4 tiles, push the top right crystal right and push the right top-right mirror right.
Hint 3
Finish: push the left top-left mirror down 2 tiles, push the top left crystal down 4 tiles and push the top left crystal left 3 tiles, then head for the exit.
Pieces that end up somewhere new: the mirror and all 5 crystals.
Hint 2
Start: push the 1st bottom-left crystal from the left right, move the 2nd bottom-left crystal from the left right and push the 1st bottom-left crystal from the left right.
Hint 3
Finish: push the bottom mirror left, move the 1st bottom-left crystal from the left left and push the bottom mirror left, then head for the exit.
Pieces that end up somewhere new: the mirror and 6 of the 8 goblins. 2 other pieces stay where they start.
Hint 2
Start: pull the bottom left mirror right 4 tiles, pull the bottom left mirror left 4 tiles and pull the bottom left mirror up 3 tiles.
Hint 3
Finish: pull the bottom left mirror up, pull the bottom left mirror down 2 tiles and pull the bottom left mirror right 2 tiles, then head for the exit.