Throwing a spear at the creature would have been a bad idea if there was a considerable distance between him and the creature. But as the creature was so close by, he thought that throwing a spear was worth a shot.
When he threw the spear, the creature was easily able to catch it. But he didn't stop there. He started running towards the creature with his plan in his mind.
He instantly whipped out another spear from his inventory and threw this one as well at it as well. The creature was able to catch it as well. He then quickly took out another one and threw straight it at the ape…
He figured that if that dumb creature was holding two spears in its hands, then it would not be able to catch the last spear. And he was indeed right. His spear went straight toward the head of the creature and got lodged in the eyes of the creature.
BAAAM