Enter "SEECOOLMOVIE" as a password under "Load Game".
Avoiding the turrets
Roll all the way and, don't run, when the turrets are shooting at you.
Defeating Algo
On the last mission, when you have to fight Algo, to kill him quicker aim for the muzzle when he fires then move up slightly and fire. This will kill him faster.
Defeating Jong Ho
Equip the .45, then hide behind the crates to the right of the full ammo supply. Place your center bead on him and fire. He will eventually die. Do not worry about getting a clear shot, as you will see with incoming enemies they will die easily.
Killing guards
Go behind a guard silently by pressing L1, then press R2 to grab him. You can now kill him by pressing X, or move him to a handscanner and press Triangle to scan his hand to open the door. When you kill someone, go near him and press R2 to hide him in the shadows.
Level select
Select the "Profiles" option at the main menu. Highlight the option for "Jasmine Curry" then hold L1 + R1 + Triangle + Circle. You will be returned to the main menu, and a "Levels" option will now appear. Note: You will not be able to save the game while this code is enabled.
Mission 5: Algo's Head Quarters
After you infiltrated his headquarters jet with the jet pack there is a sequence. When the game resumes you have to kill some opponents and Luther will tell you to put three bombs in the plane. On each side is a ladder. Go up one side then up the second ladder and go towards the back. There is a mark on the wall in red to plant one of the bombs. Hold Triangle to do so. Go down the two ladders and kill the guards that came in. Go to the other side then up the other two ladders. Again, there is a mark in red where you need to plant the second bomb. Come out and kill the other guards that entered. Go towards the back where you first came in to jet in the beginning of the level. Use your Micro-cord gun to latch on to the yellow pipe on the ceiling. Go all the way back and to find the third final bomb location. Plant it, then watch the intermission sequence. Stay there and take out your Sniper Pistol. Snipe the guards that are back by the blue crates. These opponents are tougher than the last ones you killed, but its easier to snipe them rather than killing them in close range. Then, get back to the door and go in. Kill the guard quietly and wait for the enemy to talk to you while you kill the guards that come down.
Mission 5: Surma Rooftop: Aqua Teen Hunger Force reference
Look at the AC units that are on the first part of the mission to find a reference to Aqua Teen Hunger Force.