Crysis

Suit mods
Entry Location:
The codes can be entered in the console or in a user-created System.cfg file. The console must be unlocked by using "con_restricted = 0" the cheats will become useable.

time_scale = 1 (any number) - Affects the rate at which time passes in the game.
g_suidSpeedEnergyConsumption = 110 (any number) - Amount of energy consumed in speed mode while sprinting.
g_meleeWhileSprinting = [0, 1] - Disables or enables melee attacks while sprinting.
pl_fallDamage_SpeedFatal = 13.7 (any number) - Fall speed in meters/second at which you die.
pl_swimBaseSpeed = 4 (any number) - How fast you can swim.
pl_swimJumpSpeedBaseMul = 1 (any number) - How quickly you jump out of the water.
pl_fallDamage_SpeedSafe = 8 (any number) - Maximum speed in meters/second at which you take no damage.
g_suitSpeedMult = 1.85 (any number) - Movement speed in speed mode is multiplied by this number.
g_suitCloakEnergyDrainAdjuster = 1 (any number) - Multiplies energy consumption of cloaking by this number.
g_suitRecoilEnergyCost = 15 (any number) - Multiplies energy consumption of each shot fired in strength mode.
cl_strengthscale = 1 (any number) - Multiplies punch strength by this factor.


God Mode

Locate the difficulty files in your Crysis installation folder (ie: C:\Program Files\Electronic Arts\Crytek\Crysis\Game\Config). These files are called diff_easy.cfg, diff_normal.cfg, diff_hard.cfg and diff_bauer.cfg. Open the file (with Notepad, I personaly recommend Notepad++) that corresponds to the difficulty level you are playing. Add the following line to the end of the file and save it:

g_godMode = 1

Now, when playing your health will still decrease but you will not die. Instead, your health and armor will automatically replenish when your health reaches 0.

Other Cheats
Using the same method as above, add the following lines to the end of your config file for the corresponding effect:

i_unlimitedammo = 1 - Unlimited Ammo
ai_IgnorePlayer = 1 - Enemies Ignore You
i_noweaponlimit = 1 - Carry Unlimited Number of Weapons

Note: Always make a backup before messing with config files!