Other trophies can be obtained, such as buying a BGM and costume for a character. Should be able to open the training menu and get the trophy for 1hr training.
Haven't done much with online or combo challenge. Hopefully someone else is working on that.
(Note: this is for the standard physical edition of DoA6 which came with day 1 DLC. Not sure if that may affect usage of this save for others.)
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