I'm always impressed about how complex is this game, like some hack n' slash in 2d. I really like to play with the dummy and the boss fight was really frenetic, talking about it probably, one of the points is to not have enough time to react, but I got it really difficult because I didn't know what was he going to do, just after some time playing when I understood the symbols I got it, imo you should be a bit more clear with that or at least give a second more so the player can get that and act in consequence.