i never did the final boss in his true form because it was too much of a pain in the ass. but i played through the game twice, back to back, and i played it again and it still rocks.
i thought it would be fair to judge the game on it's real game content and not the extras. with all the customization and characters to find in the game, all the abilities and armor, and not to mention the action based fighting, this game is still top notch.