It is best not to kill the enemy. Try it and you will find out why... Heh, heh, heh! If you do kill him unintentionally, before you have collected the gold at the top left, you can still finish the level by digging away the side of the pit he is in.
É mellor non matar ao inimigo. Téntao e verás porqué... He, he, he! Se o matas sen querer, antes de apañar a moeda de arriba á esquerda, aínda poderás rematar o nivel escavando ao carón do pozo onde está.