Very few of the codes that I found, I also found on the Internet later, therefore I've posted them in other places. Here is another base, select any weapon then press right on the D-Pad and that weapon will act like the one designated in the code. Here s the base
800***6B 00YY
D00572D0 0001


*=


BAB = Dam
9DF = Facility
ACF = Statue
C0F = Runway, Surface, Depot
B47 = Archive, Caverns, Cradle, Egyptian
9B7 = Bunker 1 & 2, Silo
BE7 = Streets
AE3 = Frigate
A7F = Train, Jungle, Control
CD7 = Surface 2
97B = Aztec
See the Gun modifier digits for the yy digits.

Can't enter save game file: 81025E28 0BAB




Default multi levels. When you select a level it goes to the one designated by the code automatically: Base = 81025E46 00yy
yy=
Caverns = 27
Facility = 22
Archives = 18
Library = 30
Egyptian (even if you haven't got it yet) = 20

All of these make the levels default in single too. Select Library and you go to the BETA Bunker. These codes can also make you have 4 players on Archives, Egyptian, Bunker and Caverns I think.



Long mines: This code makes mines and and grenades extra long. IT IS MY OWN CODE. Base code= 810xxxE4 C317

xxx =


BAB = Dam
9DF = Facility
ACF = Statue
C0F = Runway, Surface, Depot
B47 = Archive, Caverns, Cradle, Egyptian
9B7 = Bunker 1 & 2, Silo
BE7 = Streets
AE3 = Frigate
A7F = Train, Jungle, Control
CD7 = Surface 2
97B = Aztec


'Extra weapons' in cheat menu: 8005859D 0001

'Max ammo' in cheat menu: 80058594 0001
Both appear as 'no name'.
(I know these have now been found)

weird stuff on Surface 1 (doesn't always work. Works better on Secret Agent with invincible on.):80076DAC 0001

Facility doors: I hacked these myself with thanks to the Terrorist's codes.

801B0319 00xx
801B0419 00xx
801B0519 00xx
801B0619 00xx
801B0719 00xx
801B0819 00xx
801B0919 00xx
801B0A19 00xx
801AFF19 00xx
801AFF19 00xx
801B0119 00xx
801B0219 00xx
801B0319 00xx
801AD7A1 00xx
801AD8A1 00xx
801AD9A1 00xx
801ADAA1 00xx
801ADBA1 00xx
801ADCA1 00xx
801ADDA1 00xx
801ADEA1 00xx
801ADFA1 00xx
801AE0A1 00xx
801AE1A1 00xx
801AE2A1 00xx
801AE3A1 00xx
801AE4A1 00xx
801AE5A1 00xx
801AE6A1 00xx
801AE7A1 00xx
801AE8A1 00xx
801AE9A1 00xx
801AEAA1 00xx
801AEBA1 00xx
801AECA1 00xx
801AEDA1 00xx
801AEEA1 00xx
801AEFA1 00xx
801AF0A1 00xx
801AF1A1 00xx

Dam Alarm Modifiers (Again Thanks to the Terrorist's NTSC)
801CFCD9 00xx
801CFD69 00xx
801CFDF9 00xx
801CFE89 00xx

Players can control guns
This can get pretty interesting. Any player can control what gun other players
have, the interesting bit is when the player presses the wrong button and gives their direct opponent, an advantage. I found all the addresses (they
were in my code archive)

How the codes goes.
P1 Active gun
P2 " "
P3 " "
P4 " "
The Active gun codes are listed below. Basically, you put each active gun code below each D beginning line. If you want more than one gun per player you can put the same line under a different activator.
If you want more than four weapons, there are some more 'D' lines below that you can use.

Now, put this code @ the top
D00572D0 0001
Then the P1 Active Gun code
D00572D0 0002
Then the P2 Active Gun code
D00572D0 0004
Then the P3 Active Gun code
D00572D0 0008
Then the P4 Active Gun code

?? is the gun you want to come up. The list with all the guns will be on
ARHQ or my site.

If you want player 2 controlling it. You change the D.... line with...

P2:D00572D6
P3:D00572DC
P4:D00572E2
You can also have these as separate codes so each player can control
their own or other peoples gun control.
To control your own, you must have the Active Gun Player (whatever no.
you are) after each D00 line.
The D line ending in 01 is left D-pad, 02 is right D-pad, 04 is down d-
pad 08 is up D-pad (I think)

I haven't tried the rest of the levels yet, I'm gonna re-search the XX's
etc.

BTW, the gun that is in the code will look like the gun you have in your
hand during the switch.
I will start adding combos of buttons so it gets even more confusing. I
will soon get the rest of the active gun codes. It's pretty basic and
the chances are that the actual addresses have been found but not used
in this way. They are a little like Seasalt's 'Bond weapon arsenal
change except multiplayer with activators
Archives, Cradle

P1; 800 B476B
P2; 800 B71DB
P3; 800 B9C87
P4; 800 BC6BB

Basement, Stack,
Library, Complex,
& Temple
P1; 800 8EF6B
P2; 800 919DB
P3; 800 94487
P4; 800 96EBB
Bunker
P1; 800 A07BB
P2; 800 A31DB
P3; 800 A5C87
P4; 800 A86BB
Water Caverns,
& Statue
P1; 800 ACF6B
P2; 800 AF9DB
P3; 800 B2487
P4; 800 B4EBB
Caves
P1; 800 C0F6B
P2; 800 C39DB
P3; 800 C6487
P4; 800 C8EBB

Facility
P1; 800 AF76B
P2; 800 B21DB
P3; 800 B4C87
P4; 800 B76BB
I just found the rough things in my codes that I quickly changed. Only
Temple has been tested. Egyptian didn't look right so I'll post that
later. Player 3 things upset the pattern but Temple P3 works. I don't know if P3's work.

Other Activators
D00572D0 0003 (Right and Left D-pad)
D00572D0 0005 (Right and Down D-pad)
D00572D0 0006 (Left and Down D-pad)
D00572D0 000C (Up and Down D-pad)
D00572D0 0009 (Right and up D-pad)
D00572D0 000A (Left and Up D-pad)
D00572D0 0011 (Right D-Pad and Start)
D00572D0 0012 (Left D-Pad and Start)
D00572D0 0014 (Down D-pad and Start)
D00572D0 0018 (Up D-pad and Start)

If you need any more activators, here is the guide to making them.
00=No Buttons
01= Right Directional Pad
02=Left Directional Pad
04= Down Directional Pad
08= Up Directional Pad
10= Start Button
20= Z Button
40= B Button
80= A Button
Multi Buttons To use any combination of buttons, like, press Right Directional and Z to enable the codes. Just add the two digits up for Right Directional and Z. 01 plus 21 equal 21, so 21 would enable the codes when you push Right Directional and Z on the Controller 1
You use a different D-line for any other button apart from those above.

XX digits (Digits for gun you want to appear in persons hand put @ end of 800 code (00xx)
01 = Fist
02 = Hunting Knife
03 = Throwing Knife
04 = PP7
05 = PP7 Silenced
06 = DD44 Dostovei
07 = Klobb
08 = KF7 Soviet
09 = ZMG 9mm
10 = Automatic Shotgun
11 = Sniper Rifile
12 = Cougar Magnum
13 = Golden Gun
14 = Silver PP7
15 = Gold PP7
16 = Moonraker Laser
17 = Watch Laser
18 = Grenade Launcher
19 = Rocket Launcher
20 = Tank Shells
21 = Briefcase Bomb (acts like timed mine but looks like Ourumovs Briefcase)
22 = Plastique
Other weapon options, if you can use the object in the 'Use?' box you will see a yes. You will need to use infinite ammo for all of these. If you ever get a minus number for a gun just hit re-load.

XX	Picked Up	Watch	Picture	Use?
23	A Flare pistol	<	Grenade	No, well not as a flare pistol but as a grenade lanching genade
24	Piton Gun	<	"	No
25	New Weapon	Bungee	Grenade	No
26	"	Door Decoder	<	Not unless you can find a door to decode..
27	"	Bomb Defuser	<	Not unless you can find a bomb, actually I can get a plastique on Dam...
28	"	Camera	<	Yes
29	"	Lock Exploder	Grenade	Well that would explode a lock wouldn't it?! No you can't use it.
2A	"	Door exploder	"	No
2B	"	Briefcase	<	No
2C	"	Weapon case	<	YES! Select from the watch and press Z, you get some grenades, some throwing knives and a sniper rifle!
2D	"	Safe Cracker	<	No
2E	"	Key Analyser	<	Yes (Says you don't have the GE key)
2F	Covert Modem	<	<	Yes. As soon as you start the level though you fail objective B (only if playing on 00 or 007 mode).
30	Micro Camera	<	<	Yes, you can lay these everywhere if you have infinite ammo.
31	New Weapon	Bug Detector	Grenade	No
32	"	Guidance Data	Disk	No
33	"	Polarized Glasses	<	No
34	"	Dark Glasses	Grenade	No
35	"	Credit Card	"	No
36	"	Gas Keyring	<	No It's a good pic though
37	"	Datathief	<	No
38	"	Watch Identifier	Watch	No
39	"	Watch Communicator	Watch	No
3A	"	Watch Gieger Counter	Watch	No
3B	"	Watch Magnet Repel	Watch	No
3C	"	Watch Magnet attract	Watch	Yes
3D	"	Goldeneye Key	<	U can throw it
3E	"	Black Box	<	No
3F	"	Curcuit Board	<	No
40	"	Clipboard	<	No
41	"	Staff List	<	No
42	"	Red Dossier	<	No
43	"	Plans	<	No
44	"	Spy File	<	No
45	"	Blueprints	<	No
46	"	Map	<	No
47	"	Audio Tape	<	No
48	"	Video Tape	<	No
49	"	DAT Tape	<	No
4A	"	Spool Tape	Grenade	No
4B	"	Micro Film	Grenade	No
4C	"	Micro Code	Grenade	No
4D	"	Lectre	Grenade	NO?! how could you use a lectre?
4E	"	Money	Grenade	No
4F	"	Gold Bar	Grenade	No
50	"	Heroine	Grenade	No Wonder whether it would help us finding the Citadel...
51	Keycard	Keycard	Keycard	No
52	Yale Key	<	<	No
53	Bolt Key	<	<	No
54	New Weapon	Blank	This locks	up
55	"	Blank (Controller if you press A then go to "abort cancel" screen.)	Two rotating C buttons.	No
56	"	Weapon Blows up as soon as you kill the guy.	-