The design for this is pretty solid! The upgrade system and difficulty progression are really good. I actually played this one a lot. That said, I could have done with less dialog before getting into playing the game. I also found it odd that with each thrust of the spear the character traveled forward in the direction of the thrust. Took some getting used to. And the different attacks didn't have much difference except that the secondary attack took longer. It might have had a longer reach, but it didn't seem to matter. It was better to get up close and spam the primary attack and do much more damage in a short amount of time. Even when got a damage bonus both attacks did the same amount of damage.
Anyway, don't let any of that get you down. It really is a good game!