Main Menu: Red button
From the Main Menu, go to "More"and then enter this sequence on the D-pad: Up, Right, Down, Left. You will come to a screen with two buttons: green and red. Red cranks the Manual speed all the way up.
Secrets and Easter Eggs
A list of hidden mini-games and secret areas for One Finger Death Punch 2.
Credits Easter Eggs
From the Title Screen go to "More".
Once there, go to "Credits" (left once).
Enter the following code on your keyboard: Up Down Up Down
A "portal" will appear on the screen. Click on the portal to proceed to a special fight. Good luck.
Contact Easter Eggs
From the Title Screen go to "More".
Once there, go to "Contact" (left twice).
Enter the following code on your keyboard: Down Up Down Up
A "portal" will appear on the screen. Click on the portal to proceed to a special fight.
This unlocks the "Enter the Epic Bonus Stage" achievement.
Main Menu Easter Eggs
On the Title Screen enter the following code on your keyboard: Up Down Left Right
You'll get to play a minigame. Progress in the minigame to unlock more secret codes.
Minefield Easter Eggs
Follow the advice above.
On the "Minefield" Title Screen enter the following code on your keyboard: Right Left Down Up
You'll be taken to another minigame. I haven't been able to progress in this one.
Survival Easter Eggs
From the Title Screen go to "Survival".
Enter the following code on your keyboard: Left Right Right Left
This is supposed to take you to a music player. It currently crashes my game.
Levels Easter Eggs
From the Title Screen go to "Levels"
Once there, enter the following code on your keyboard: Down Up Right Left
The words "Revenge Token" will appear on the screen. This will grant you an extra revenge token to use to skip levels that you have died in.
Main Menu: Red button...