Full Ending
[Submitted by: Cheat Masters ]
There are technically two endings in the game. To see the "extended version" of the ending, you must protect the character Kyrie from being damaged for at least a minute and a half as the credits run. If you manage to do this, the rest of the ending is thereafter revealed. Otherwise, you'll have to beat the last boss once more and try again.

Easy Orbs (Mission 9)
Description: Quickly get souls (400-1,100) in about a minute on Mission 9.
How to: From 9th mission, skip past the cutscenes & wait until you are attacked by the 3 angels. Charge Nero's gun and lock onto the leader of the 3 angels while dodging their attacks. When they swoop down and begin to charge up their energy attack, fire your gun locked onto the leader. This will kill all 3 instantly, gaining you an SSS rank, style points, and the orbs! You can repeat this process as much as you would like. Plus you will occasionally find an unaffected angel after the blast who you can kill for another 100-300 souls.

Easy Orbs (Mission 7)
Description: Collect a lot of orbs ( get about 4,000 orbs in 20 seconds)
How to: [7th mission] At the start of the mission, break the egg-like objects to your left. Now head forward to the tunnel & break more of the same egg-like objects. Turn right once at the end of the tunnel, and you'll see a gem. Execute a streak with the Exceed Gauge full, and then immediately use the Devil Trigger and combo it. When the gem finally breaks, you should have around 4,000 orbs. After that, all you have to do is retry the mission and do it over and over again as needed.

Devil May Cry 4 PS3 Unlockables
[Submitted by: Toebin ]
Definition:Super Dante Costume
How To Unlock:Beat Dante Must Die Mode
Definition:Super Nero Costume
How To Unlock:Beat Dante Must Die Mode
Definition:Demon Invasion Artwork
How To Unlock:Beat Dante Must Die Mode
Definition:Hell and Hell Mode
How To Unlock:Beat Dante Must Die Mode
Definition:Bloody Palace
How To Unlock:Beat Devil Hunter Mode
Definition:The Cast Artwork
How To Unlock:Beat Devil Hunter Mode
Definition:Character Images of The Two Heroes
How To Unlock:Beat Devil Hunter Mode
Definition:Son of Sparda Mode
How To Unlock:Beat Devil Hunter Mode
Definition:Light from the Demon Blade Artwork
How To Unlock:Beat Hell or Hell Mode
Definition:The Demons publicity pictures
How To Unlock:Beat Son of Sparda Mode
Definition:Dante Must Die Mode
How To Unlock:Beat Son of Sparda Mode
Definition:Heaven or Hell Mode
How To Unlock:Beat Son of Sparda Mode
Definition:The Ladies of Devil May Cry Artwork
How To Unlock:Beat Heaven or Hell Mode

Easy Orbs (Mission 3)
Description: Collect a lot of orbs
How to: After you finish the game's 3rd mission, head back through and play it again. From the start, run past the statue into the 1st hall, where you can kill enemies to collect experience points and orbs. Now, seek out a hallway where a wooden wall stands. Break through the wall, where you can find a crystal. Break the crystal to collect an automatic 1,000 orbs. Now, exit the mission. This is a quick way you can repeat over and over again to collect as many orbs as you'd like (and some experience, too).

Another: This technique is similar enough in the beginning to the one above -- you will want to seek out the same wooden wall that can be broken down. Kill the enemies there after breaking down the wall, then backtrack to the red crystal in the area. Hitting it with your sword will give you 850 orbs right off the bat. But if you power up (using Devil Trigger) and attack it, you'll get over 3,000 orbs! This only takes a couple of minutes to accomplish, and like the technique above, can be repeated at will.

Dice Game Exploit
Description: Cheat at the boardgame in the Game Room.
How to: When you roll the dice, you can predict the number you will roll every time. The number showing on the die before it's rolled is the number that will show up if you count properly. So, for example, if you would like to roll the number 3, simply way for the "3" to show up on the top of the dice. Count 6 rotations before you strike the die, and you will have rolled a "3"! This is great for exploiting the game to win extra orbs.

Control the Camera During Cutscenes
The camera can be controlled during any cutscene in the game giving you alternate views of what you're seeing. To move the camera around, use the right analog stick on your controller. Zoom in and out by using the R2 button.

Super Nero & Dante Costumes
Description: Unlock the Super Costumes for Nero and Dante
How to unlock: Beat the game once through on Dante Must Die difficulty.

Quasi-Secret Launch Jump
Description: Either Nero or Dante can perform a launch jump off of ledges that sends them flying far forward, much further forward than a normal jump. This launch jump can be used to collect secrets and sometimes shortcut secret missions.

How to: Stand facing a nearby ledge that you can jump off of. Perform the Streak or Stinger attack (while locked up, press UP + Attack) and Nero or Dante will dash forward. The ledge cuts off the attack animation and instead launches the character far forward.

Free Health from Faults
Description: Look for faults to kill and get their health
Late in the game, you'll find fault enemies appearing from underneath you. They warp up from the ground and try to ensnare you. If you manage to kill a fault, you will always be rewarded with a free health orb.

3 Difficulty Levels
Description: There are 3 "elite" difficulty levels that can be unlocked in the game.
How to unlock: Once you've unlocked Son of Sparda mode and get through it, two more difficulty levels will be unlocked Dante Must Die and Heaven or Hell.
If you get through either of those subsequent difficulty levels, you will unlock the final difficulty level Hell or Hell.

2 Endings
There are 2 endings in the game. To see the "extended version" of the ending, you must protect the character Kyrie from being damaged for a full minute and a half as the credits run. If you manage to do this, the rest of the ending is thereafter revealed. Otherwise, you'll have to beat the last boss once more and try again.

Bonus Art & Character Art
How to unlock: Complete the game on Devil hunter difficulty (may also unlock by beating on Human difficulty).

Bloody Palace Survival Mode
How to unlock: Complete the game on Devil hunter difficulty (may also unlock by beating on Human difficulty).

Gallery
How to unlock: Complete the game on Devil hunter difficulty (may also unlock by beating on Human difficulty).

Son of Sparda Difficulty
How to unlock: Complete the game on Devil hunter difficulty.

History of Devil May Cry
Complete the game on Devil hunter difficulty (may also unlock by beating on Human difficulty).