Scenarios Forum Scenario 13

You wake up to find yourself marooned on a small deserted island. You have five gallons of water, fifty tacos composed of a a shell, meat, tomatoes, and cheese. You also have a fully loaded sniper rifle and magnum. The island has 106 trees and 10,678 large rock of an unfamiliar type. You can't see shore in any direction. What do you do?

I eat all my tacos shoot stuff until I only have one bullet then blow my brains out. NO VIDEO GAMES NO LIFE!!!