Adventure In The Forest

Little John is going into the wood to find gold ore, but that place is filled with a lot of zombies. Little John can go up, down, left, right and throw gold bar at zombies faces to destroy them, but of course, gold bar is heavy and he cannot throw a lot of them quickly.
Can you guide him through the forest, full of zombies to find gold ore?
Tip: Gold ore is always located in one of comers of the forest.