More of the same
It's obvious you put a lot of work into this game, but it really is more of the same-- it's time to evolve.
I find that it's no fun to start with everything unlocked-- why not allow the characters to level up and earn new weapons and abilities, rather than start with everything? The fact that I have nothing to look forward to as I play through puts a serious downer on the game. The skill selection after a wave is a good start, but part of the fun of adventure RPG's is learning new abilities and finding new weapons.
Obviously I am in the minority here as the game is scoring quite well, but I am disappointed in the lack of new features and the same "fight waves of enemies over and over and over again" mechanic displayed in the first game. You're obviously a talented programmer-- use that talent to introduce new ideas and concepts and I'm sure you'll have a masterpiece on your hands.