Really nice polish with the artwork - I loved the fade with the erase theme. The sound FX and animations also nicely complemented the action in the battle.
I think I would have really liked to have had a tutorial or example mode, as the rotation of the items placed sort of eluded me for most of the first battle - and by the time I caught on to what was going on it was too late to save that run.
I did run into a slight problem with the FTL style path selection tree, in that I ended up having to take a path with two shop nodes in a row, but wow, that path selection tree looks SO much better than what I ended up implementing for my game, it really shows what having good UX design & art on a team can accomplish. Bravo