Constantine

While playing, press pause. Enter the journal then press Black, Left, Right, Left, Left, Right, Left, Black.

Cheats List
Throughout the game you can either pause it (by pressing START) for menu options or you can go into your journal (by pressing BACK). Once you are in the journal, you can enter the cheat codes. The screen will flash when you have successfully entered the code. The directions are done on the D-pad.

Use your Dragon Breath gun to take away more life than any other gun you have.

At about the end of the second level, you will find the Sangre de Dio. After you solve the puzzle to unlock the dagger, pick it up and Constantine will start talking to himself. After about five seconds, an intermission sequence will start and the Vermin Demon will start to form. When the fight starts, do not waste your bullets. Pick up the screeching beetle that is on the left wall when you enter the room, if you do not already have one. This is the only weapon that has any effect on the Demon. Throw the beetle at the demon so that it falls to the ground and takes effect faster. This will paralyze it. Then, get close to it and melee it once with your weapon. It will disintegrate. If you hit it again, the Vermin Demon will hurt you. Step back, and now you can start shooting. The Witch's Curse gives a lot of damage. When it starts to integrate again, go to True Sight so that you can find and pick up the beetle again. Throw it again and repeat the process.

When you reach the part on the journey to papa midnights you will come to a puzzle on the and you have to reveal a code to pass the code is Y, Y, B, A, A, A, X, X. Start by pressing y so it can go clock wise.

Note: Thanks go out to Richard Mays for correcting this code.