Ooh, another cave story mix!
Very neat arrangement ideas for this one. This could adapt to a live symphony quite beautifully! The production could've used a little bit of touch-up, though. The samples were nice for the most part(with the exception of some string sections), but personally I think you could've spent a little more time doing audio mastering/adjusting EQ/etc. It just needs more punch!
Overall though, I enjoyed it, and it's a worthy take on Cave Story's music! The arrangement is what matters more here, and it's fantastic. Keep it up!