Great Graphics, Lacking Dialogue
Even though I personally really enjoyed this, I feel it fell down in some places.
Where you greatly made up in the art, you fell down in the character's dialogue. The character's replied too many times with something as blunt and unfitting as "That's Good to hear", where as in your other games their reply actually matched what choice you picked.
That and the music was very nice, but only had one track playing for all entirety. Different musical choices for each character or mood would have been very nice-- instead of one track that is very nice but becomes zombifying after a while.
I also liked the fact that their were multiple endings!
Maybe you could make use of the medal system for each ending, hmm? :]