I love this game! The art is beautiful! I actually had a similar idea in mind for my game, controlling two characters with different abilities, but I have to say that you did a way better job than I :D
The characters still get stuck on walls but it was not a big issue for me!
Great Game!! Controlling the characters with WASD would be lovely but it was also fine as it is :) Loved the little puzzles and most importantly the Art!