Note: don't know how to add titles:
Button box is one of the difficult bosses that have angles and is the first extreme boss. Button box is exactly what you think he looks like. A giant box with buttons, but he is a foe that will not fall easily.
The battle takes place over a load of lava on top of the box itself, buttons appearing over the box. A few of the buttons are for you to step on.
The battle (spoilers)
In order to deal damage you must step the correct button, but stepping on the wrong one will launch a missile at you that gets faster each time you deal damage. On the semi-last phase he will automatically fire at you and once he's at 1 hp he does nothing. Tips: Get running when you activate the wrong button and step on a few wrong ones while the missile is after you because they will explode. When you reach the final phase Dodge the remaining missile and then step on the button.