Jump over the gaps and keep walking as long as you can. You will start with 20 energy points, each jump will cost 1 energy point. Press and release the left mouse button to jump (hold for a bigger jump). Collect bones to gain energy. Catch the wings bubble to fly, collect all the other items and unlock the achievements. Watch out for the fire and volcanoes, as they reduce your health. It will become more difficult the further you walk. Have a darn good time playing Boomerang Devil!