Use the stick to move left/right. Click the buttons to do more. Jumping, attacking and rolling all cost SP. Attack the mineral to destroy it. This pickaxe, should be able to defeat the slime. Click the avoid button to avoid the attack. Your every avoidance would cost SP. And you won't be attacked for a short period of time. Defeat all the monsters, then you can enter the next room.
A ; B ; C ; D ; E ; F ; G ; H ; I ; K ; J ; L ; M ; N ; P ; R ; S ; T ; U ; V ; W ; X ; Y ; Z