Avoid Bosses
To continue the game without having to play scissors-paper-stone, go to any boss and, as soon as the chit-chat is out of the way, press Start to get the Select screen, then press Start again to proceed.

Defeat the Gorilla
You can defeat the Gorilla in Janken by using the signs: Paper, Paper, Scissors, Rock, Rock, Scissors, Scissors, Paper.

Extra Money
When in Rookietown, jump repeatedly until you break the ground. Destroy the treasure chest to the left, destroy all the bad guys, blow the treasure chest all the way to the right, then go back again. All the bad guys will be back. Destroy until you get the desired amount, then spend it all on bracelets