To throw banana use left mouse click. To throw further hold down the click for a bit. To collect coins and ammo move your mouse over it. And you should do this because you can never have enough ammo and coins are needed for upgrades. Potential upgrades are for example wall - which should be up as soon as possible. Then you have weapons upgrades like - banana, coconut, pineapple and slippery banana mine. There is also regeneration upgrade - another very useful thing.

As you advance through the game new and more dangerous enemies start showing. Flame throwing shamans and flying birds are more difficult to kill so spread your attention accordingly. You can also use number keys to switch between weapons because coconuts are more effective than bananas but you have only limited number of them. Once you spend all of them you automatically go back to bananas. So, to resume, help keep this monkey alive or it's roast time for it!