It's a beautiful game, and I loved the graphics and sound effects; they're very well-integrated. Overall, it would have been better if you had added more attacks for the boss, since he is, after all, a boss.
Thanks for playing. We thought about having multiple attacks but then we realised bosses need to charge up before they attack! Hence the attack tiles.
Oh, sorry, I didn't notice that those squares were for charging attacks. I thought they were upgrades or something. I need to re rate the game.
