Hey, question, I have no clue what the upgraded bosses do in Challenge Mode, I'm pretty confused, BTW, this is a great game.
Man, that clam boss is a tough cookie, with music to match. Turns out the shotgun isn't the best weapon for that guy, after all...
Shotgun changes everything...
The game is challenging. And makes you feel a total badass!
The last fight against that gunship - even more awesome than even Call of Duty!
And there must be a spin-off/prequel game about that ninja!
Another excellent stage, although most of the bosses were lame.