On the last level put nades in front on him and he wont shoot you for 3 seconds (you can use rather extra nades or gun spawn so that when he stops shooting you blast him off the map)
In this game you learn a lot abut elephants:
1.They lie bout being buffalos and having trophies
2.They have an obsession with balloons
3.They make a great difference in the traffic of arms business