Level up glitch
In this glitch, you will easily be able to defeat boneyards enemy's before the boss battle with the help of levelling up. This is especially good early game, when you level up quite fast.STEP 1: fight enemy's until close to levelling up. Then travel to a incomplete data boneyard.
STEP 2: Wait until some monsters/enemy's spawn. When they do, click the 'level up' icon on the touchscreen STEP 3: WARNING- DONT click any of the 4 options displayed on the touchscreen. If you do, this will not work. All the enemy's will be frozen and unable to attack, while 'levelling up'. While so, go around and attack them. (When they die, they will not disappear until you finish levelling up. You will know they are dead when you can no longer hit them, and they give you Xp.) STEP 4: more enemy's should spawn, and kill them until there is no more to kill. When this is so, finish levelling up, by clicking an option on the touchscreen, and the boss battle will start. Easy!