Q+Bert

Jump to the top of the pyramid. When Coily's on one of the cubes below you and ready to pounce, jump up-right off the pyramid. Coily will follow you, you'll get the points for killing him, and you won't lose your life!!! With this trick you could potentially reset the score counter without ever leaving the first pyramid.

If you time it carefully, you can jump right through coily or a red ball; jump toward the square something is on just as it's about to move toward you (this is easiest just as coily coils to spring). Once you get the timing down, it becomes difficult to actually die.