Press 's' to continue.
Even if I didn't read all the storyline, I must say this is an interesting cartoon. I say cartoon and not game because it lacks some gameplay.
The ideas behind the game are nice but I don't really see where all the weapons/armor upgrades, combos and special move are useful. In other words, tapping the 's' button suffice to get through the game...
Maybe you should make the enemies more mobile and far more aggressive so you have to make full use of the possibilities to succeed. Currently, you don't play the game @ 100% of its possibilities.
Other than that, graphics and sounds are very nice and the controls are ok, no need to customize them; as long as you can reach all the buttons with the left hand while keeping the right hand on the arrows it's fine.