Doom cheats and cheat codes for Playstation

Unlock all weapons, ammunition, and keys
Press X, Triangle, L1, Up, Down, R2, Left, Left while the game is paused.
A message will confirm the correct code entry.

Invincible mode
Press Down, L2, Square, R1, Right, L1, Left, Circle while the game is paused.
A message will confirm the correct code entry.

Level select
Press Right, Left, R2, R1, Triangle, L1, Circle, X while the game is paused.
A message will confirm the correct code entry. Press Left and Right to select
a level, and accept your entry with Square, Circle, Triangle, or X.

See through the walls
Press L1, R2, L2, R1, Right, Triangle, X, Right while the game is paused.
A message will confirm the correct code entry.

Reveal all objects on the map
Press Triangle, Triangle, L2, R2, L2, R2, R1, Circle while the game is paused.
A message will confirm the correct code entry.

Reveal all walls and boundaries on the map
Press Triangle, Triangle, L2, R2, L2, R2, R1, Square while the game is paused.
A message will confirm the correct code entry.

Random levels
Enter "DOOMMNLxxx" at the password screen, where xxx the same
character such as !!! or 666. Now the game will start at a random
level with an different amount of ammunition, armor, and life.

Level passwords

Level - Title - Password

Ultimate Doom
Level 2 - Plant - CR!3WDD3DB
Level 3 - Toxin Refinery - 3JJCMK8W64
Level 4 - Command Control - 03LTJ0Y!02
Level 5 - Phobos Lab - H33!1HFTHK
Level 6 - Central Processing - 04MSKZX9Z1
Level 7 - Computer Station - YTTLCXXLXV
Level 8 - Phobos Anomaly - 09SMBY04YW
Level 9 - Diemos Anomaly - 7KKBLD7V53
Level 10 - Containment Area - FM4217GSGJ
Level 11 - Refinery - H!!3WDGLDB
Level 12 - Deimos Lab - 07QPDW26WY
Level 13 - Command Center - WTXQ9C3W12
Level 14 - Halls of the Damned - RBR4G!LDLN
Level 15 - Spawning Vats - WTXQ9C3W11
Level 16 - Hell Gate - 548C7DFWYX
Level 17 - Hell Keep - JOC89DZPQS
Level 18 - Pandemonium - JGB9CT0NRT
Level 19 - House of Pain - 9QLTKR0!02
Level 20 - Unholy Cathedral - 78M63QX921
Level 21 - Mt. Erebus - S!61FHVQJG
Level 22 - Limbo - 33QHFTT6WY
Level 23 - Tower of Babel - VBGQPJ!Y46
Level 24 - Hell Beneath - ZYKTLW7V53
Level 25 - Perfect Hatred - 0DJSM4HW64
Level 26 - Sever the Wicked - LS5YPTCRKH
Level 27 - Unruly Evil - ZDJSMVRW64
Level 28 - Unto the Cruel - 1YKTX4QV53
Level 29 - Twilight Descends - XKF6R8LZ97
LEvel 30 - Threshold of Pain - DJX07Q4HTR

Doom II
Level 31 - Entryway - C0W1!QNJQS
Level 32 - Underhalls - VM!3V1D3DB
Level 33 - The Gantlet - W394W2DMFC
Level 34 - The Focus - ZQ58ZKJRKH
Level 35 - The Waste Tunnels - Z758ZKJ8KH
Level 36 - The Crusher - 5C2V3DQBNL
Level 37 - Dead Simple - NCKBLX7V53
Level 38 - Tricks and Traps - 1Q580FCRKH
Level 39 - The Pit - HTMSKZZ9Z1
Level 40 - Refueling Base - WS58ZKCRKH
Level 41 - O of Destruction! - CSNRG2W820
Level 42 - The Factory - WT670JBQJG
Level 43 - The Inmost Dens - DQLTJ1Y!02
Level 44 - The Suburbs - 2N94VFFMFC
Level 45 - Tenements - CQLTJ0Y!02
Level 46 - The Courtyard - WR492GDSGJ
Level 47 - The Citadel - PFFGXH3777
Level 48 - Nirvana - JWCJV2X479
Level 49 - The Catacombs - CJJTM35964
Level 50 - Barrels of Fun - M!T174XZXV
Level 51 - Bloodfalls - 5770MX2CDF
Level 52 - The Abandoned Mines - YJLW3PPCPM
Level 53 - Monster Condo - DKKBLM58J3
Level 54 - Redemption Denied - 7L3!266DJK

Bonus levels
Level 55 - Fortress of Mystery - BBBBBBB666
Level 56 - The Military Base - 3P67ZNBQJG
Level 57 - The Marshes - JCGDNFL555
Level 58 - The Mansion - BXXBXXB778
Level 59 - Club Doom - JCGDNFL556