S.T.A.L.K.E.R.: Shadow of Chernobyl - Unlock Bonus Content

Code - Result:
pseudodog - Unlock Multiplayer Map
snork - Unlock Multiplayer Map

Hint:
Easy way to get hold of a AKM-74/SU, a RGD-5 Grenade and 2 anti-radiation caps very close to the beginning of the game:

Play the first mission rescue a stalker from some raiders and collect as many items as you can from the fallen. Go back to the camp you begin the game and sell the collected guns. At that point you should already be able to but the silenced handgun and have some spare change ideally just over 500 RU, if not then do a side-mission for the stalker you just saved.

Once you have the silenced handgun and 500 RU you should make your way north towards the bridge where you can see 4 or 5 army soldiers engaged with a few stalkers. Save your game and wait until the soldiers got rid off the stalkers and speak to the soldier towards the left of the bridge close to the debris, not the one at the campfire. He will let you pass the barricade for 500 RU. Agree to pay the money and he will turn around. At this point you have about 3-5 seconds where none of the soldiers will be looking at you, and the soldier you just spoke to just so happened to be in an area of debris and pipes. Shoot him with the silenced handgun, and MAKE SURE it is a headshot. He will go down quietly, however make sure you un-equip your weapon at the same time.

If you have done it quick enough the other soldiers will not notice a thing and you can loot the body to get hold of a decent weapon, grenades and some anti-radiation caps. However, timing is everything and since the solider's position changes during the fight you may want to make use of your quick-save/quick-load keys. Also, while you are at it, make sure you climb up to the wagon still hanging at the top of the bridge for some more hidden equipment.

Free Stalker Suit From A New Game:
At the very beginning of the game, you need to talk to a stalker named Wolf in the Cordon newbie camp. Behind Wolf is a ladder that leads to an empty backpack in the attic.

Climb the ladder but do not enter the attic. Instead, walk around the ledge formed where the roof and walls meet. You can work your way onto the roof of the house that way.

Once on top of the roof of this house, there is an identical house north of the one you are on. You can sprint and jump to the roof of that adjacent house you take a little damage.

When you get to the second house's roof, carefully make your way to the side with a hole in the roof -- just past it, you should be able to make out a wooden crate you can destroy. If you spoke to Wolf and accepted the mission to rescue Nimble, you should have a pistol.

Shoot the wooden crate and a Stalker suit worth 15,OOO Rubles will be inside. Simply grab it and you'll be immediately better off than you think you could be.

Barrels of Fun:
If you shoot an NPC in the game, he and his faction will open fire on you. However, you can use the red explosive barrels to kill them and it will not count as a "source of damage" against your character.

You can try this against some of the Freedom NPCs in the Army Warehouses who are standing next to what amounts to a giant bomb that only needs your gunfire to detonate. In fact, if you have the patience to locate red explosive barrels in pacified areas, you can use this exploit to bag a lot of items and loot

Performance Fix:
It's his user file, he tweaked it quite well. It helped me a lot and a few other people, hope it helps you too.

Go into your User.alx file. It can be found in C:Documents and SettingsAll UsersDocumentsSTALKER-SHOC

Replace all the text with the following:

preset Default
aiusetorchdynamiclights on
unbindall
bind jump kSPACE
bind crouch kRCONTROL
bind crouchtoggle kSLASH
bind accel kLSHIFT
bind sprinttoggle kX
bind forward kUP
bind back kDOWN
bind lstrafe kLEFT
bind rstrafe kRIGHT
bind llookout kQ
bind rlookout kE
bind camzoomin kADD
bind camzoomout kSUBTRACT
bind torch kL
bind nightvision kN
bind wpn1 k1
bind wpn2 k2
bind wpn3 k3
bind wpn4 k4
bind wpn5 k5
bind wpn6 k6
bind artefact k7
bind wpnnext kY
bind wpnfire mouse1
bind wpnzoom mouse2
bind wpnreload kR
bind wpnfunc kV
bind wpnfiremodeprev k9
bind wpnfiremodenext k0
bind pause kPAUSE
bind drop kG
bind use kF
bind scores kTAB
bind chat kCOMMA
bind chatteam kPERIOD
bind screenshot kF12
bind quit kESCAPE
bind console kGRAVE
bind inventory kI
bind buymenu kB
bind skinmenu kO
bind teammenu kU
bind activejobs kP
bind map kM
bind contacts kH
bind votebegin kF5
bind vote kF6
bind voteyes kF7
bind voteno kF8
bind speechmenu0 kC
bind speechmenu1 kZ
bind usebandage kRBRACKET
bind usemedkit kLBRACKET
caminert 0.
camslideinert 0.25
clcodpickupmode 1
cldynamiccrosshair on
galwaysrun on
gautopickup on
gbackrun on
gcorpsenum 10
geventdelay 0
ggamedifficulty gdstalker
hudcrosshair on
hudcrosshairdist off
mmmmnetsrvdedicated off
mmnetconpublicserver off
mmnetconspectator 20
mmnetconspectatoron off
mmnetsrvgamemode stdeathmatch
mmnetsrvmaxplayers 32
mmnetsrvname BLACKBOX
mmnetsrvreinforcementtype 1
mmnetweatherrateofchange 1.
mouseinvert off
mousesens 0.32
netclicurvesize 0
netclicurvetype 0
netclinterpolation 0.
netcllogdata off
netclpendinglim 3
netclupdaterate 30
netdedicatedsleep 5
netsvlogdata off
netsvpendinglim 3
netsvupdaterate 30
phfrequency 75.00000
phiterations 24
r1dlights on
r1dlightsclip 10.
r1glowsperframe 16
r1lmodellerp 0.1
r1ppsu -1.
r1ppsv 0.
r1ssaloda 64.
r1ssalodb 48.
r1tfmipbias 0.
r2aa off
r2aabreak 0.800000,0.500000,0.000000
r2aakernel 0.5
r2aaweight 0.250000,0.250000,0.000000
r2allowr1lights off
r2gi off
r2giclip 0.001
r2gidepth 1
r2giphotons 16
r2girefl 0.9
r2glossfactor 1.4
r2lsbloomfast off
r2lsbloomkernelb 0.7
r2lsbloomkernelg 3.
r2lsbloomkernelscale 0.7
r2lsbloomspeed 100.
r2lsbloomthreshold 0.001
r2lsdepthbias -0.0003
r2lsdepthscale 1.00001
r2lsdsmkernel 0.7
r2lspsmkernel 0.7
r2lssquality 0.5
r2lsssmkernel 0.7
r2mblur 0.
r2parallaxh 0.04
r2slightfade 0.05
r2ssaloda 96.
r2ssalodb 64.
r2sun on
r2sundepthfarbias -0.00001
r2sundepthfarscale 1.
r2sundepthnearbias 0.00001
r2sundepthnearscale 1.
r2sundetails off
r2sunfocus on
r2sunlumscale 1.
r2sunlumscaleamb 0.5
r2sunlumscalehemi 1.
r2sunnear 12.
r2sunnearborder 0.75
r2suntsm on
r2suntsmbias -0.01
r2suntsmproj 0.3
r2tfmipbias -3.
r2tonemap on
r2tonemapadaptation 1.
r2tonemapamount 0.7
r2tonemaplowlum 0.0001
r2tonemapmiddlegray 0.6
r2waitsleep 0
r2zfill off
r2zfilldepth 0.5
r2em 2.
rdetaildensity 0.44
rgeometrylod 1.2
rsupersample 4
rtfaniso 12
renderer rendererr2
rscbrightness 1.
rsccontrast 1.
rscgamma 1.2
rsfullscreen on
rsrefresh60hz off
rsstats off
rsvsync off
rsvisdistance 1.
sndacceleration on
sndcachesize 32
sndefx on
sndtargets 24
sndvolumeeff 0.8
sndvolumemusic 1.
svanomaliesenabled 1
svanomalieslength 3
svartefactrespawndelta 30
svartefactstaytime 3
svartefactscount 10
svautoteambalance 0
svautoteamswap 1
svbearercantsprint 1
svclientreconnecttime 60
svconsoleupdaterate 1
svdedicatedserverupdaterate 100
svdmgblockindicator 1
svdmgblocktime 0
svforcerespawn 0
svfraglimit 10
svfriendlyindicators 0
svfriendlynames 0
svfriendlyfire 1.
svhailtowinnertime 7000
svpdahunt 1
svpendingwaittime 10000
svreinforcementtime 0
svremovecorpse 1
svremoveweapon 1
svreturnplayers 1
svrpointfreezetime 0
svshieldedbases 1
svspectrfirsteye 1
svspectrfreefly 0
svspectrfreelook 1
svspectrlookat 1
svspectrteamcamera 1
svstatisticcollect 1
svstatisticsaveauto 0
svtimelimit 0
svvoteenabled 1
svvoteparticipants 0
svvotequota 0.51
svvotetime 1.
svwarmup 0
texturelod 2
vidmode 1280x1024

Make sure you create a backup of your original file.