Full Gearbox
Once you have unlocked the Full Gearbox using the secret room in the tutorial level you are able to replay any world with all three gears by using its effect To activate it hold R and press Select while on the world select screen The Screw Bit will turn yellow to indicate that you have activated the Full Gearbox
RSelect > Toggle Full Gearbox on World Map screen
Hard Mode
Once you have the Proof of Mastery item you can select Hard mode on the file select screen by holding down LR before you hit the Start button
LRStart > Hard mode
