Have a 2 Octopi rank at the end of the Fort Knox level.

Have a 4 Octopi rank at the end of the Crab Key level.

Have a 5 Octopi rank at the end of the Midas Casino level.

Have a 5 Octopi rank at the end of the The Octopus level.

Have a 3 Octopi rank at the end of the Hoover Dam level.

Have a 5 Octopi rank at the end of the Auric Enterprises level.

When your opponent uses his or her shield, hit them with your stun power. They will be
unable to hack out of it because their shield drains all of their power. Then, pick them
up and throw them. When your opponent uses MRI Vision, use your shield. You will become
invisible to them. Try different combinations of weapons to see which works best for your
fighting style.

Have a 5 Optopi rank at the end of the Fort Knox level.

Have a 5 Optopi rank at the end of the Fort Knox level.

At the extras menu, press Down, Right, Down, Right, Up, Down, Up, Left to unlock all
single player levels, multi-player levels, options, and content.