On empty race days, create a sprint race and enter it. When it starts, use all your nitro and just keep pressing L near the redline. You will usually win about 95% of the time.

On empty race days, host a Class 1 sprint race. Bet all your money on the Dodge Viper, which will usually always win. If there are two Vipers, do not make a bet.

Successfully complete the game to unlock a fifth armor for purchase.

Successfully complete the game. Then, find the sixth ship's five hidden parts in the other plane areas to access it. The five hidden parts can be found in the following areas:

1. Near the landing area where you had the Hellcat repaired.
2. The bottom of the island of Part 1.
3. At "Far Land", inside the center area of the mountain area behind the Phantom Blade.
4. In the area where you get ambushed later and Daxter hijacks and rides guided missiles returning to their sender, locate the landing area for the level (the lab where you get the Shield Eco power). Keep flying north into the canyon.
5. At Sector Zero (ship graveyard), north central area of the map on one of the holes of the spike sword objects.

At the main menu, hold L + R and press Up or Down.

After the game is completed, levels may be played again with added, moved, or missing objects. Each level will also have a time limit. Additionally, successfully complete the game. Then, go to the stage select screen, and scroll through all the levels until the word "Extra" appears. Restart the game to be able to jump five instead of three times in a row.

Successfully complete the game (not including extras) without using any continues to enter Super mode. In this mode, you can jump six instead of three times in a row. Press Triangle to fall faster and do more damage when landing on enemies. Press L to run faster and jump farther.

Successfully complete all missions.

In mission 29, kill a zombie near the Chimaira sign, then get the avatar that it drops. The sign is located in the long street section under the park at the top of the map.

Successfully complete all missions.

In mission 5, kill a zombie near the Slipknot sign, then get the avatar that it drops. The sign is located almost in the center of Time Square.

Win ten online fights in Infrastructure mode to unlock Boneshell.

Win ten online fights in Ad Hoc mode to unlock Moby.

Get all upgrades for Megaman, except for the arm upgrade. Keep playing until you fight Vile the second time in Sigma Palace 3. Defeat him but make sure you do not have the arm upgrade. After defeating him, you will automatically get Zero's Buster from him.

Successfully complete all levels on the Adventurer difficulty to unlock the Harem Time Trial level.

Successfully complete all levels on the Grad Student difficulty to unlock the Treasure Room Time Trial level.

Pause the game, then hold L + R and press Down(2), Right(2), Up(2), Left(2). If you entered the code correctly, you will hear a sound.

Pause the game, then hold L + R and press Right, Down, Right, Down. If you entered the code correctly, you will hear a sound.

Pause the game, then hold L + R and press Left, Right, Left, Right. If you entered the code correctly, you will hear a sound.

Pause the game, then hold L + R and press Up(2), Down(2). If you entered the code correctly, you will hear a sound.

Pause the game, then hold L + R and press Down, Left, Up, Right to unlock all costumes. If you entered the code correctly, you will hear a sound.

Successfully complete the game to unlock the "Continued Play" option, which allows a new game to be started with all previous stats and items, and an alternate main menu background (with characters from the game).