Good, But I have some issues.
-Animation-
The animation is much improved from last time, no doubt about that, some nice features that made me go "hmm, I like that" but keep at it and I've no doubt that this will develop into a masterpiece.
-Sound-
This was a problem, much like in the first part, that the music would drown out the voices. All it takes is to key mark the music and do a fade to an appropriate level. The music itself wasn't an original choice but of course it's a sonic movie and most of the music was from the sonic games but I got a bit of "Nazo Unleashed" vibe off it. Now the voices, I myself am a Voice Actor and know what I'm looking for when I hear a voice, I recognize Rina-Chan's voice as Amy and must say her Amy voice has really improved. But the mic quality of her clips dwarf the others, also I got the impression that all the other voices weren't even in the same conversation, they didn't sound like they were listening to each other and therefore it just sounds like people were reading lines and therefore made it uninteresting to listen to. I recommend you either get a voice director or some better VA's. It's always unfortunate to have sub-par VA work bring down a flashes quality.
-Overall-
Great potential to be a classic sprite movie. Nice storyline. Well animated. Just those issues with sounds to be sorted and it'll be great.
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Shard-Spider