Bashing the Bohrok
To do damage to a Bohrok or a Bohrok-Kal, you must get it to unroll. When you're 
battling a Bohrok or Bohrok-Kal as Toa Tahu (the red one)or Gali Nuva (the blue 
one), they will randomly unroll to attack you. 
If you're playing as Toa Kopaka (the silver one), then you must get close enough 
that the Bohrok is targeted. Then, use your shield This will unroll the Bohrok 
(attack it quickly and as many times as possible during the 3 seconds that you 
have before it rolls up again).

Bionacle of light takua nuva
Complete the game with all 6 toa including toa tahu nuva's quest to unlock the 
bionicle of light takua nuva

Extra bonuses:
Complete a level with all Lightstones collected as each Toa to unlock a bonus at 
the Extras menu. 

Destroying dark cages:
Use Nuva Blasts to destroy dark cages. Charge your elemental energy, then 
immediately press Triangle.

Defeating Makuta:
When you are at the end of the game and are battling Makuta. press X(2), 
Triangle. You should be gliding and dodging all attacks except for the flying bees.

Dodging attacks and refilling your Mana:
When getting attacked (this works well when facing more than one opponent), 
jump and use your shield rapidly. The attack will completely miss and you will refill 
your Mana. Note: Do not do this with dragonflies and other flying enemies. It may 
work, but there is less chance of it working. For extra effect, while in the air press 
Attack. Since enemies are vulnerable when they attack you, they will get serious 
damage.