You can do one thing: click to make Beavus jump.
Nom nom nom! Eat those mangoes!
Strap on your running shoes and reach the exit!
Enter the cave and leave with the gold!
Tap the right side of the screen to jump and grab on walls. In later levels, tap the left side of the screen to turn on and off translucent blocks.
Click or press UP to jump and grab on walls. Jump off a wall to turn around. Don't worry about running, you will move forward automatically. In later levels, Right Click or press Space to turn on or off the translucent blocks.