The easiest way to do it, for me, was to get the beetles to come close enough to me, then push them towards the upper left hand hole. When I got them on the left of the button,I stayed on it and continued hitting them with the sword. Once the cart passed the turn off I pushed te beetles into the hole. It might take a while to do it, but whenever you see the cart getting close the the turn-off, get back on the button. You'll have to come back later with a broken sword to do it again. When you come back again, you push the 4 beetles in and another 4 come out.

well its very simple when the turtles atacks hit them with your sworduntil they fall into the hole (holes) but be careful so the cart dont crashes into the nut

Hit all the enimies into the hole And if you need more time stand on the button.