In the first level of redwood forest (the level after the first boss), climb the tree where the bird is dropping eggcorns. At the top there is a knife. Get the knife, go down the tree and cut the brige. Fall down and go right. After you beat the level in the play area you will see a question mark. Enter it to play in Bunny Land.
Exit level
When you are in a level and want to leave but you're stuck or can't find the exit, hit start then press A B and C at the same time and you will exit the level.
Final boss tip
If you stand to the far right of the screen when the Final Boss shoots his lasers, he can't hit you.
In game reset
During gameplay, pause and press A + B + C to exit the current level.
Level passwords
All but 4 levels completed (including lighthouse): 040 277 404 304 304 567 073 717 514
All levels open: 600 276 007 314 325 663 037 356 576
Secret animation
Go to the level 'A Hidden Place' and collect the letters to spell OTHER. Stack them up and push them to the exit.
Secret developer message
Go to the level 'A Hidden Place' and collect the letters to spell HEROS. Stack them up and push them to the exit.
Shoes
Go to the level 'A Hidden Palace' and collect the letters to spell SHOES. Stack them up and push them to the exit. Puggsy will lose his shoes when hit, but he'll return with them on should he die. Does not work while the unlimited life cheat is activated.
Unlimited lives
Go to the level 'A Hidden Palace' and collect the letters to spell CHEAT. Stack them up and push them to the exit. Puggsy will turn green and now have unlimited lives.
Bunny land...