O.O
Impressed? I'd say so. I actually made an account with newgrounds especially to review this particular submission. This is perhaps the most original and inspired animation it has ever been my pleasure to watch.
I really don't think sound effects would improve this flash, in fact, if used incorrectly, they'd completely screw it over.
The artwork and detail used in the backgrounds was incredible, and I was actually sad when she killed the dune-type worm thing. The movements were so fluent and precise, you'd think you'd actually watched a giant worm fly through the air to create such a marvellous effect.
I await the sequel with great anticipation as I could bet it's gonna be even more breathtaking than this :3.