Various cheats

Skip Checkpoints:
     Hold  L  and  press B, A, X, Y during game play to advance to the
next checkpoint. A sound will confirm correct code entry.

God Mode:
     Hold  L  and  press  X,  Y,  B,  A during game play. A sound will
confirm correct code entry. Note: The code cannot be enabled until you
take  the elevator after being attacked at the start of the game. When
a  new  area  is  loaded,  the  code  must be re-entered to regain its
effect.

Locker Combinations:

Locker 001: 396
Locker 003: 483
Locker 009: 752
Locker 013: 586
Locker 017: 347
Locker 023: 531
Locker 038: 409
Locker 039: 102
Locker 047: 123
Locker 048: 123
Locker 049: 123
Locker 054: 246
Locker 054 (second): 142
Locker 063: 972
Locker 064: 651
Locker 078: 364
Locker 079: 364
Locker 103: 259
Locker 104: 579
Locker 112: 538
Locker 114: 715
Locker 116: 972
Locker 116 (second): 624
Locker 117: 624
Locker 213: 371
Locker 215: 298
Locker 216: 624
Locker 217: 624
Locker 317: 841
Locker 386: 836
Locker 387: 836
Locker 452: 571
Locker 666: 372
Locker 669: 468
Martian Buddies 1 and 2: 0508
Weapons Storage 1 and 2: 584
Monorail Override Junction 5: 826
Monorail Override Junction 5 Junction 7: 953

Other Codes:
     The following codes are for Ultimate DOOM and DOOM II included in
the  Collector's  Edition.  Enter  any  of  the following codes during
gameplay  and  while Holding Left Trigger. Enter them in again to turn
them OFF:

Cheat code:             Result:
A,A,A,A                 God Mode
X,Y,B,A                 God Mode (ALT)
X,X,X,X                 Temporary God Mode
Y,Y,Y,Y                 Show Map
X,Y,Y,Y                 Radiation Suit
Y,Y,Y,X                 Light Amplification Goggles
X,X,Y,Y                 Invisibility
B,A,X,Y                 Level Skip
A,B,A,B                 All Keys, Weapons, etc
B,B,B,B                 All Weapons and Ammo
B,B,A,A                 Give Chainsaw
A,A,B,B                 End Level       
X,X,X,Y                 Berserk Mode