I dumped with BrainDump, extracted the files with ctrtool, patched them, recompiled the binaries, deleted the first 0x1000 bytes with HxD, and it sorta works.
It patches mostly right, but there are no sprites for pretty much anything. However the one battle I got through looked perfect, but then froze in another so. Maybe I did something wrong, but I did get it to sortanotrlly work.
Will try to change stuff with hans and see if it works better (I clocked up the CPU so maybe that might be the problem. /shrug)
EDIT: Hey have some screenshots: