Have Water ward(maxed) on everyone and go to little twister and use the kramer dolls near the well to start a fight with Kraken(hidden Boss).When you start just have everyone defend or not attack him, and let him use all the water moves he wants cuz they all do no damage and everytime you water ward is used it add 0.1x on the exp chart so....if he used that water move 100 times...then the exp you earn from him is 99.9 times the regular ammount which gives you alot of levels but takes patience.Note:Kraken doesnt always use the water move and just attacks you regularly but its not alot of damage is you have like 3000hp.