Battles were tough, but usually fair. I don't know how it happened, but defeating Beryl took forever (3 battles and over 15 minutes). Clearly I was doing something wrong as on my third try I defeated her not long after starting.
I loved the visuals! The custom sprites, battlers and tiles are *chef's kiss*
Only bug I noticed was at the bottom right of the map I could see crystals and a MV sprite hanging around.