If you spend time figuring out how to play the piece, it will become one of those pieces that seems to play itself.
Why even bother analyzing music theory if you can do anything you want?
Debussy sometimes writes "unplayable" chords. It's clear, that the notes can't be played simulaneously, so you have to play them consecutively and use pedal to hold the notes. I play the lowest two notes alone and then the rest of the chord all together.
I hope that helps. (By the way, can someone check my theory for me? I'd hate to have it be wrong and have the original poster learn bad stuff just because I'm rusty.)
Re-writing Debussy I found it quite physically impossible to play the final chord of measure 6 so I rewrote the chord as shown below. This sounds just fine to me. Can anyone actually play the chord the way it is originally written? I just can't imagine anyone playing that chord with just two hands.