Puck the Elf mini-game:
Successfully complete the game under the easy difficulty
setting.
Battle arena mode:
Successfully complete the game under the normal difficulty
setting.
No limit mode:
Successfully complete the game under the very hard
difficulty setting.
Easy hard mode prizes:
Use the following trick when obtaining the hard mode
prizes. Set the difficulty to easy and proceed to the final stage
save point (before fighting Balzac's first form). Quit and save
the game. Set the difficulty back to hard and continue the game.
Even though you completed most of the game under the easy difficulty
setting, you will still get the prizes for hard mode. You still
have to complete the final stage in hard mode, but some tough
sections (such as the battle with Zod) are a lot easier.
Front and rear attack:
Fire the hand cannon while your sword is drawn. As
you are firing, keep pressing X (main sword attack). After
the cannon blast fires and knocks Guts back, he will spin and
slash his sword behind him, defeating enemies to the rear.
Hint: Completing the game under the easy
and medium difficulty quickly:
Unlock the "No Limit mode" option, then select
the final Boss stage. This will make it easier to complete the
game under the easy and medium difficulty settings.