The following procedures involves editing a game file. Create a backup copy of the file before proceeding. Use a text editor to edit the "diff_easy.cfg", "diff_normal.cfg", or "diff_hard.cfg" file in the "\crysis warhead\game\config\" directory to activate the corresponding cheat function on the Easy, Normal, or Hard difficulty. Add the line "con_restricted = 0" and type the following cheat codes in the file.

ai_IgnorePlayer = 1 AI ignores player
g_playerHealthValue = 900.0 Extra health
g_godMode = 1 God mode
i_unlimitedammo = 1 Infinite ammo
hud_nightVisionConsumption = 0 Infinite nightvision
g_playerSuitEnergyRechargeTimeArmor = 0 Instant energy
g_playerSuitEnergyRechargeTimeArmorMoving = 0 Instant energy while moving
g_playerSuitArmorModeHealthRegenTime = 0 Instant health regen
g_playerSuitArmorModeHealthRegenTimeMoving = 0 Instant health regen while moving
ai_UseAlternativeReadability = 0 Koreans speak in Korean
g_suitArmorHealthValue = 900.0 More armor points
cl_strengthscale = X Multiplies punch strength by this factor.
g_suitRecoilEnergyCost = 0 No energy cost
g_suitCloakEnergyDrainAdjuster = 0 No energy loss
g_playerSuitEnergyRechargeDelay = 0 No waiting until energy regen starts
g_playerSuitHealthRegenDelay = 0 No waiting until regen starts
i_noweaponlimit = 1 No weapon limit
g_suitSpeedMult = 2.85 Run faster
g_difficultyLevel = [1 - 4] Set difficulty ("1" is easy, "4" is most difficult)
g_playerSuitEnergyRechargeTime = 0 Set energy regen time to 0
g_playerSuitHealthRegenTime = 0 Set health regen time to 0
g_playerSuitHealthRegenTimeMoving = 0 Set regen time while walking to 0
g_suitSpeedEnergyConsumption = 1 Speed suit never runs out of energy
r_displayinfo = [0 or 1] Toggle frame rate display
g_meleeWhileSprinting = [0 or 1] Toggle melee attacks while sprinting
v_goliathmode = [0 or 1] Toggle vehicle invincibility