Not bad.
I'm a huge fan of the original Lilium flash. In fact, it's why I joined. I was a bit skeptical about this, until your proclaimed the magical words that it was NOT a parody, but rather a homage to the original. But like most copies, it in my opinion, falls short of the glory of the first one. I like how you kept Shadow. I wasn't a big fan of the music this time around, mostly because it came screaming into my poor earphones.
As for the history of Shadow, who is quite possible Newgrounds most engima bad guy, I belive is where you fell short the most. It was good, but... I don't really see him /possession/ people like. I see him more of a gentleman type, that suduces and tricks little girls into doing foul tricks and deeds. But to make him a manical demon who slays people randomly like that? I didn't buy it.
But it was still a good flash. If it was treated independently, rather then a homage I may have given you a ten. But like all copies, you only SHORTLY fall before it. So I'll give you a nine. Keep up the good work in any case. You have a good talent.