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.

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.

Collect two Tri-Wizard Shields to unlock the Exploding Snap mini-game.

Collect eight Tri-Wizard Shields to unlock the Niffler Time Challenge mini-game.

Successfully complete level 1 to unlock the Wizard pairs mini-game.

Successfully complete the Katamari Damacy mini-game to unlock the Evening level.

Reach the Castle in the Evening level of the Katamari Damacy mini-game to unlock the Night level.

Get over 80 points as your second score at the end of any normal mode stage to unlock that stage's Eternal version, which removes the time limit.

Get a 100% object collection by finding each of the 2,434 objects. The island's name board will now appear on a strobe light name board instead of wood.

Successfully complete the indicated task to unlock the corresponding song in the "Sound Test" option at the "Vacation Memorial" screen:

Blue Orb song: Successfully complete the game and the credits.
Song For King Of Kings: Successfully complete the game and the credits.