The idea is really good but right now is a very very unbalanced game, it's like you want a difficult game and I get it, but imo it's just less funny than the version 1, too many OP enemy (like hydra or fanatic), too many spawner enemy
Hard, I'm been able to complete the game in hard mode only twice, but even in the normal or easy mode i think that the player possibility to win really depends by what enemies you encounter, but again this just my opinion I see that someone was even able to strike a lot of victory in hard mode, i would love to see a video of the gameplay, the players must be really good in the game