Fun little game, played two rounds, one as Samurai, one as Dwarf, against the CPU (Rogue, Dwarf). There seems to be a big first player advantage, since getting a combo going is easier in the beginning, and keeping it going is easier once you get some SP.
I didn't run into any issues, bugs, or anything like that.
The dwarf does seems underpowered since you can't pick which cards get removed, while Samurai seems the most powerful since you can time your strikes to occur when you have no more options.
Anyway, it's a fun concept, and better than ordinary solitaire.