i picked up the anima mercury and went to level 4
im in the library i went to the Gyro Blade and pushed the O button loads of times and nothing happened whats wrong ? im using the PS3 version

Hmm... I don't really get that, but in M4, when you are in the library, you just have to punch the Gyro Blade against the door to break it <___<

But it would have cost you less if you searched on Youtube:



:p

its O for the defult control setup, check maybe u changed it, in short just buster it. and actually hit it

You have to use the blades to smash into the shields that glow with blue energy, they open doors. To get the blades to go really far, hit them with your sword a couple of times first before you hit them with the Buster move.