On the vertically scrolling level where Joe is being held bya red pterodactyl, keep moving down the screen giving you more time to see rocks and bonuses.
On the fire levels, stop in the gaps to let the boulders roll past.
Use stone wheels as scouts, they follow the land and kill anything they touch.
A single drumstick adds half an energy point.
Slabs of red steak add two energy points.
Watch out for red eggs which take you to bonus screens.