Don't touch red laser beams blocking the path or you'll be forced to restart the game.
Look out for any nearby red buttons attached to the walls. Brushing against these will very often switch nearby beams off.
If progress seems impossible head back to an earlier part of the level. There might be a hidden button that opens up the path much further ahead, or you might be able to manipulate an obstacle in a different way.
When adjusting the angle of the rope tethering Petey to the rockets, be very slow and deliberate with your movements cuse if you stretch the rockets too far apart from each other you'll snap the delicate rope holding him up.
As you travel up the screen, keep an eye out for the chunky multicolored cube cluster hidden somewhere on the level. Picking up this object is essential for opening up the exit point.
If your rope turns red, it's about to snap, so let go of the rockets and have a rethink.
Be careful when you push gates, for some of them will block off other routes if you're too rough.
Watch out for violent locals with guns - they'll cut your rope and leave you hanging.