To activate this cheat mode you need to get onto the high score table with a score of exactly 23300 points and never progressing past level 1. You can achieve this by collecting all the fruit on the ledge you start on as well as going right and killing the 4 baddies and the fruit they are guarding. Once you have 23300 points, fall down the hole until you have no lives left. Enter your name as “BOB” and when you restart the game you will have infinite lives.
On a really hard level, wait for 2 minutes and a swarm of bees will now fly at you. Collide with any of the bees and you will lose a life. The level will now restart without the bees or the enemies, so you are You are then free to complete the level with no foes.