Undiscovered Power Earning TrickAdded 3 May 2012, ID #4658
When you beat the game the second time ( after you get all the powers) if you don't like the karma status you have, then delete all your saved games from inFamous 2. Then start a new game. When you beat it this time, then you get all the powers because your PS3 still thinks you didn't delete the other profiles. Now you have all the powers.
During the Storm the Fort mission, having used the transfer device you should receive a reward of 100 XP. Head to the left and kill yourself in the water and you should respawn at the same place and get the XP again. You can repeat this to get all the XP you need.
There are various easter eggs hidden in Infamous 2.
Red Ring: Most humorously, you can find a Red Ring of Death store in New Marais - which sports a faithful rendition of the Xbox 360's hardware issue in it's logo.
Theater Parodies: When passing the New Marais theater, look for the film titles that parody other video games:
Assassin's Need (Assassin's Creed) Call of Booty (Call of Duty) Epic Hickey (Epic Mickey) Hey, Low Reach (Halo Reach) Latch It and Skank (Ratchet and Clank) Little Big Unit (LittleBigPlanet) No Ned for Speed (Need for Speed) SLY (Sly Cooper) Solid Serpent The Man (Metal Gear Solid/Solid Snake) Uncharted Love (Uncharted series)
Early Access to Flood TownAdded 14 Jun 2011, ID #3929
In 'Mission Editor' move your marker to either bridge that connects the first half of New Marais to Flood Town. Raise the marker so that it's at least 50 feet higher than the raised bridge. Exit 'Mission Editor' and Cole will instantly appear where your marker was when you exited. You will now be able to use your thrusters and clear the gap between the raised bridge and get access into Flood Town.
Complete Story mode two times (Hero and Infamous routes). When the second playthrough's credits have ended a message will appear on screen stating that you have unlocked access to the opposite Karma powers of your current Cole, along with the powers of the character you did not transfer with. You will also get 15,000 Experience points.