Spinning Blade
One special maneuver that you can develop is the spinning blade. This does extra damage and has better reach than a normal strike. Typically, it only spins for a moment. You can make the spin last indefinitely by pressing Circle and Triangle rather than X when you're launching the blade.
Don't Lose a Battle
Typically, when you lose your last hit point, that's the end of the battle. You lose. But if you have over 25 LP, you can use your Bit Beast attack even as the screen is going black. Press the Triangle and your beast will be summoned, giving you a second chance at victory.
Don't Lose LP
When you summon a Bit Beast, you lose 25 LP. To avoid this, press the Circle button twice just as the screen goes black. When the screen returns to normal and you see the Bit Beast there, your LP should still be where you left it.