Press Start to pause game play. Then, press Up(2), Down(2), Left, Right, Left, Right, L1, R1, L1, R1, Start. The sound of a gong will confirm correct code entry.
Ice King: fire, electricity, ice, earth (mostly earth) Stone Sentenel: fire, earth Steam 2: fire, ice Cynder: earth (use tornado to trap her, but make sure you only use the very few Spirit Crystals if you have no breath power!)
When fighting these your best weapon is ice.
Switch to flame then;
Cool move 1; when using an aerial melee attack press and hold  in between pressing O to have spyro breathe fire in between slamming the bad guy... or baboon thing... or whatever the enemy.
Cool move 2; hold O then instead of jumping quickly press  to breathe fire. The bad guy will spin in the air on fire.
Health:Press Start,up,up,down,down,left,right,left,right,L1,L1,R1,R1,start. If you did it right, you should hear a gonging sound.
Magic:Press the same thing as Health, accept change L1,L1,R1,R1 to L1,R1,L1,R1.