A+. Good sokoban puzzle/metroidvania, with just enough story line to give a sense of progress (as opposed to pure sokoban Lvl number).
Nice use of having some solutions be available only from certain directions, and the gradual short cut and ability accumulation through-out the game. Very well balanced, and good feelings of returning to old places and being able to solve them in new ways.
Seeing Owl early and previewing all those final puzzles over and over again before FINALLY being ready for them? Very good feel.