It is now just you against Cragger. Since Cragger has the triple Chi power, he can perform some powerful attacks. Avoid them and, while he is recovering, get in some attacks of your own.
In addition to his spinning attack, Cragger also can launch power fists at you. Keep moving to dodge these attacks.
As you attack Cragger, you collect Chi power. Once you have enough, power up and perform slam attacks and other attacks to inflict more damage. Eventually Cragger brings in more crocodiles and powers them up to attack you.
Keep up the powered-up attacks to finally reduce Cragger’s health down to nothing in order to defeat him. Once he is beaten, Crooler takes the triple Chi power and flees. Since he is the only one who knows where Laval’s father, Lagravis, is located, Cragger joins up with Laval and his friends.