Initial map:
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 |.............|.............|
 |.0..|.0.|..(.#.............|
 |.0.|.0|0.|...#.............|
 |.0|.0...0....#.............|
 |...0...|.0|..#.............|
 |0|.0..|..0.|0#.............|
 |..|0.|...0...#.............|
 |....0...0.|0.#.............|
 |...|.0|0.|.0.#.............|
 |....|.0.|..0.#.............|
 |...........@>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |..^^^^^^^^.......^^^^^^^^..|
 -----------------------------

Label the Boulders:
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 |.............|.............|
 |.B..|.T.|..(.#.............|
 |.C.|.U|S.|...#.............|
 |.D|.V...R....#.............|
 |...E...|.Q|..#.............|
 |A|.F..|..P.|Z#.............|
 |..|G.|...N...#.............|
 |....H...M.|W.#.............|
 |...|.J|L.|.X.#.............|
 |....|.K.|..Y.#.............|
 |...........@>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |..^^^^^^^^.......^^^^^^^^..|
 -----------------------------

Step One: Path Around the Edge:
 * Push Z two tiles north.
   + You can now reach the magic chest.
 * Push A two tiles south.
   + You can now walk a full circuit
     around the puzzle's perimeter.
 -----------------------------
 |.............|.............|
 |.B..|.T.|..(.#.............|
 |.C.|.U|S.|...#.............|
 |.D|.V...R...Z#.............|
 |...E...|.Q|..#.............|
 |.|.F..|..P.|.#.............|
 |..|G.|...N...#.............|
 |A...H...M.|W.#.............|
 |...|.J|L.|.X.#.............|
 |....|.K.|..Y.#.............|
 |...........@>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |..^^^^^^^^.......^^^^^^^^..|
 -----------------------------

Step Two: Breaking the Circle
 * Push R two tiles west.
   + You can now get into the circle.
 * Push J two tiles south, then
   four tiles west.
 * Might as well go ahead and push J
   all the way south and take it east.
 -----------------------------
 |.............|.............|
 |.B..|.T.|..(.#.............|
 |.C.|.U|S.|...#.............|
 |.D|.V.R.....Z#.............|
 |...E...|.Q|..#.............|
 |.|.F..|..P.|.#.............|
 |..|G.|...N...#.............|
 |A...H...M.|W.#.............|
 |...|..|L.|.X.#.............|
 |....|.K.|..Y.#.............|
 |............>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |.@.^^^^^^^.......^^^^^^^^..|
 -----------------------------

Step Three: Clear the Bottom
 * Push K one tile west, then take
   it along the same path as J.
 * Push L two tiles south, then
   take it along the same path.
 -----------------------------
 |.............|.............|
 |.B..|.T.|..(.#.............|
 |.C.|.U|S.|...#.............|
 |.D|.V.R.....Z#.............|
 |...E...|.Q|..#.............|
 |.|.F..|..P.|.#.............|
 |..|G.|...N...#.............|
 |A...H...M.|W.#.............|
 |...|..|..|.X.#.............|
 |....|...|..Y.#.............|
 |............>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |...@.^^^^^.......^^^^^^^^..|
 -----------------------------

Step Four: Sides of the Circle
 * Push H three tiles west, then
   south and take it.
 * Push N two tiles west, then
   south and take it.
 * Now push M one tile west, then
   south and take it.
 * Push R three tiles east,
   back to its original position.
    -----------------------------
    |.............|.............|
    |.B..|.T.|..(.#.............|
    |.C.|.U|S.|...#.............|
    |.D|.V....R..Z#.............|
    |...E...|.Q|..#.............|
    |.|.F..|..P.|.#.............|
    |..|G.|.......#.............|
    |A.........|W.#.............|
    |...|..|..|.X.#.............|
    |....|...|..Y.#.............|
    |............>|<............|
    |-.-#########---#########-+-|
    |..^^^^^^^^^^?.?^^^^^^^^^^..|
    |........^^.......^^^^^^^^..|
    -----------------------------
(Continuing Step Four...)
 * Push F one tile east, then
   two tiles south.  Now push it
   three tiles east, and take it.
 * Push G one tile south, then
   east; take it the same as F.
   + You can now reach the scrolls.
 * Push P one tile west and take it.
 * Push R three tiles west again.
 * Now take Q.
 -----------------------------
 |.............|.............|
 |.B..|.T.|..(.#.............|
 |.C.|.U|S.|...#.............|
 |.D|.V.R.....Z#.............|
 |...E...|..|..#.............|
 |.|....|....|.#.............|
 |..|..|.......#.............|
 |A.........|W.#.............|
 |...|..|..|.X.#.............|
 |....|...|..Y.#.............|
 |............>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |...................^^^^^^..|
 -----------------------------

Step Five:  Finishing the Circle
 * Push R three tiles east, back
   to its original position AGAIN.
 * Push S one tile south, one east,
   then south and take it away.
 * Push T one tile east, then take
   it along the same path as S.
 * Push E two tiles west for now.
 * Push V four tiles east (next
   to R) then south and take it.
 * Push U one tile south, then
   take it the same way as V.
 * Push R back one tile west
   and take it.
 * Push E three tiles east, then
   three tiles south, and take it.
   + You can now access the door,
     room, and up stairs.
 -----------------------------
 |.............|.............|
 |.B..|...|..(.#.............|
 |.C.|..|..|...#.............|
 |.D|.........Z#.............|
 |.......|..|..#.............|
 |.|....|....|.#.............|
 |..|..|.......#.............|
 |A.........|W.#.............|
 |...|..|..|.X.#.............|
 |....|...|..Y.#.............|
 |............>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |...........................|
 -----------------------------

Extra Notes:
 * If you are willing to trap
   X, you can take Y and W.
   You can push X either way to do this,
   but east is a bit better, since then
   it can still be moved along the wall.
 * Similarly, trapping C will free B and D.
 * I don't know of any way to free and take
   the other four (X, C, A, or Z), short
   of teleportation or schenanighans.
 * I don't know of any way to fill the
   top row of pits, short of schenanighans.
 -----------------------------
 |.............|.............|
 |.B..|...|..(.#.............|
 |.C.|..|..|...#.............|
 |.D|.........Z#.............|
 |.......|..|..#.............|
 |.|....|....|.#.............|
 |..|..|.......#.............|
 |A.........|W.#.............|
 |...|..|..|.X.#.............|
 |....|...|..Y.#.............|
 |............>|<............|
 |-.-#########---#########-+-|
 |..^^^^^^^^^^?.?^^^^^^^^^^..|
 |...........................|
 -----------------------------