Just to begin, I rather loved the story! The way everyone seems to have their own take on the actions of the king really fleshes the dialogue out and gives it depth beyond "Oh hey, I am the king, I kick puppies and execute the crippled." The art and voice acting is passable, but it's a free game made out of love so who am I to complain?
The main gimmick of using the platforms to attack was done perfectly, you started off with the typical blocks that drop when you run over them, a concept most gamers are very familiar with, moving on to more damaging and complex platform types like rockets, spikes and directional pillars, it was really fun trying to weigh time spent on the platform vs the actual damage it would do.
My only real gripes are how the final few levels seem to suffer from "final boss syndrome" where they get more and more difficult until the game demands absolute perfection on the part of the player. I say a good majority of my time was spent trying to edge out a few extra points of damage on the last monster, restarting again and again when I failed to do so.
In the end, if I could redo it all again and replay this game from a fresh perspective, I would! The gameplay was very challenging, the story engaging and the ending was absolutely perfect. A wonderful experience.