- Acquireable phone numbers
Insert one of the following phone numbers at any phone to unlock a collectable:

555-3249
555-1917
555-3452
555-3440
555-4676
555-6799
555-7526
555-3429
555-8856
555-5211
555-8989
555-3794
555-1266
555-5465
555-4336
555-8416
555-4691
555-5569
555-8164
555-5197
555-6441
555-9588
555-5549
555-6503
555-2763
555-1234
555-5477
555-9868
555-1229
555-7614
555-7641
555-5595
555-6713
555-7467
555-9345
555-3496
555-8881
555-3492
555-6454
555-6892
555-9903
555-3849
555-4463
555-8896
555-3495
555-7710
555-4603
555-2575
555-4525
555-4682
555-5466
555-5439
555-7761
555-1228
555-5709
555-5438
555-3791
555-6418
555-1952
555-8766
555-9913
555-5327
555-7642
555-1093
555-3520
555-3318
555-5311
555-5619
555-4649
555-2764
555-2734
555-7643
555-2941

- Activate Cheats
Insert one of the following numbers at any phone to active the corresponding cheat function. If you entered the code correctly, you will hear a message.

2K Darkling Enter '555-4263' as a number to unlock the 2K Darkling.
Golfer Darkling Enter '555-5664' as a number to unlock the Golfer Darkling.

- Manual error
There is a misspelling on page 11 of the instruction manual, under objective indicator. It reads 'Check you journal for more information' with the word 'your' misspelled.

- Entire in-game movies
About three hours into the game, after you pass the cold storage part, you will end up in a hallway with a lot of doors you can open. The middle door will have some computers and an enemy that never heard the gunfight because he is watching a television with some headphones. Kill him and the television will be yours to use. The option to change the channel will be given to you. Change the channel and some music videos and cartoons will pass. Wait a few seconds to see what is coming on next. There will be one with some cheesy music and words, and white lines coming out. This is actually a movie from 1955 called The Man With The Golden Arm starring Frank Sinatra. You can watch the entire movie on this television.


When you are in Jenny's apartment, sit down with her and the film To Kill A Mockingbird will begin. It is possible to watch the entire film.

- Answering machine phone numbers
The following is a list of answering machine phone numbers to enter at any phone:

555-6402	Sarah
555-4263	Retailer 1
555-7373	Butcher
555-7735	Paulie
555-2284	Jenny
555-5664	Retailer 2
555-8672	SBZ

- Jenny in Chapter 4
When you are about to give up the Darkness guns and extract the Darkness, look at the Demon in the middle. Look behind him in the bright light and you should see Jenny.

- Overcomeing the Darkness in the castle
To defeat the Darkness in the castle (after you have blown open the gate), go up to every chair you see in the main room. Each chair will prompt you to activate it. Notice: This does give away your Darkness powers for the time being. After the Darkness appears as a red/evil Jackie, put any guns away so that just your hands are out. This will stop his attacks. Then, walk up to him without any guns out, and a prompt should appear to 'Accept Him'. The fight will then be over.

- Secret phone numbers
The following is a list of all 35 secret phone numbers to enter at any phone:

555-1847
555-4569
555-6205
555-5723
555-3285
555-6893
555-7613
555-2309
555-9528
555-7892
555-4565
555-6557
555-8930
555-7658
555-4372
555-7934
555-1037
555-9985
555-3243
555-8024
555-6118
555-3947
555-2349
555-2402
555-9562
555-5289
555-9132
555-6667
555-3840
555-1233
555-1206
555-6322
555-9723
555-9898
555-6325
555-6969

- Keeping the zombie soldiers dead
When you are in the 'Otherworld' (you will go there after you die the first and second time), the Germans soldiers almost always get back up after you kill them. The only way to make sure they remain dead is to devour their hearts.


The following is an easy way to keep the zombies dead when you die. Kill them with the demon arm, and throw them off the ledge. Notice: This only works outside. If you throw them off the ledge inside a building, they will not die. Instead, they will follow you up to the level you are on. You can also devour their hearts to keep them dead.

- Popeye cartoon in Demo version
In the Grinders Lane stage, go to the room with the television. Push X when you see 'Switch Channel'. Popeye The Sailor will begin playing.