Cheats for Crysis 2 for PC

Open the game console by pressing the tilde (~) and then enter:
con_restricted 0 And then press enter. This turns on the cheats for the game. Once that's entered, you can use the following codes:

God Mode:   g_godMode = 1 
Unlimited Ammo:  g_infiniteAmmo = 1 or i_unlimitedammo = 1
Unlimited Suit Energy:  g_infinitesuitenergy=1

In "Dead Man Walking" you get an new objective: "Locate the Nanosuit Deep Scan Cradle; Locate Gould." Take the elevator down at the end of the level and then go down the hallway. Go right and look for the security camera and a bank of equipment. Hop over the red rope and look for a switch. Hold ACTION to flip the switch and a red light will turn on. Head back to the elevator and hop another red rope to reach a second elevator. The switch will be glowing. Hit ACTION again to open it and you will see a strange sight: A CELL disco party in the elevator!!!

The following is a list of all suit modules and their upgrades:

Armor

Air Stomp: Velocity based attack; more speed deals more damage. Requires elevation beyond a Power Jump.

Minimum Velocity Damage: 40 damage out to 2 meters

Maximum Velocity Damage: 220 damage out to 7 meters

Upgrade II: No damage from falling

Upgrade III: 0.5x recovery time after Air Stomp

Proximity Alarm: Sense enemy in a 30 meter horizontal radius (not vertical); updates every two seconds

Upgrade II: Sensor updates every second

Upgrade III: Sensor updates every half-second

Armor Enhance 0.5x energy consumption

Upgrade II: +25% movement speed in Armor mode

Upgrade III: Immune to Nanosuit Jammer Bonus

Threat Tracer: Highlight bullet path within 6 meters

Upgrade II: Highlight grenades within a 15 meter radius

Upgrade III: Highlights explosives within 15 meter radius

Nano Recharge: 2x health regeneration

Upgrade II: 2x suit recharge (60 per second)

Upgrade III: 0.5x delay before health regeneration

Detonation Delay: +2 seconds to grenade fuse when in blast radius

Upgrade II: +2 seconds to C4 fuse when in blast radius

Upgrade III: Fires Chaff against enemy JAW missiles

Energy Transfer: Restores 20% energy with a kill

Upgrade II: Restores 30% energy with a kill

Upgrade III: Restores 50% energy with a kill

Power

Side Pack: +1 primary magazine

Upgrade II: +1 grenade/explosive

Upgrade III: +1 attachment ammo

Weapon Pro: 0.6x reload time

Upgrade II: 0.5x aim down sight time

Upgrade III: 0.4x weapon swap time

Aim Enhance: Reduced recoil (unique to weapon)

Upgrade II: 0.4x view shake from explosions

Upgrade III: 1.6x movement speed when aiming down sights (compared to whatever negative speed it offers)

Loadout Pro: Two primary weapons

Upgrade II: No mobility loss from attachments

Upgrade III: 1.5x speed while carrying HMG (compared to its 0.6x speed scale)

Rapid Fire: Higher rate of fire on primary weapons (unique to weapon)

Upgrade II: Higher rate of fire on secondary weapons (unique to weapon)

Upgrade III: Higher rate of fire on mounted weapons

Point Fire Enhance: Reduces spread of primary weapons (unique to weapon)

Upgrade II: Reduces spread of secondary weapons (unique to weapon)

Upgrade III: Reduces spread of mounted weapons

Mobility Enhance: 0.5x sprint and jump energy cost

Upgrade II: 0.5x ledge grab climb time

Upgrade III: 0.25x fire after sprint time

Retriever: Automatically collect Dogtags

Upgrade II: One less Dogtag required for support bonuses

Upgrade III: 1.2x support bonus time

Stealth

Stealth Enhance: Transition time to/from stealth is halved

Upgrade II: No shadow cast in Stealth mode

Upgrade III: 0.5x energy drain rate in Stealth mode

Covert Ops: No player footstep sound

Upgrade II: Invisible to Ceph Airstrike

Upgrade III: 2x enemy footstep sound

Cloak Tracker: Displays particles on Cloaked enemy within 20 meters

Upgrade II: Causes enemy Cloak to flicker after 7 seconds in radius

Upgrade III: Causes enemy Cloak to flicker after 5 seconds in radius

Jammer: Scrambles the radar of enemies within a 10 meter range

Upgrade II: Provides protection against enemy Radar Jammer attacks

Upgrade III: Scrambles the radar of enemies within an increased range

Blind Spot: Invisible to Maximum Radar

Upgrade II: Immune to Visor Tagging

Upgrade III: Become less visible to enemies in Nano Vision

Tracker: Track enemy footsteps within 25 meters; updates every 0.6 seconds

Upgrade II: Footstep direction tracks

Upgrade III: Doubled track updates (every 0.3 seconds)

Visor Enhance: Automatically tag enemies when zoomed in

Upgrade II: Enemy Flashbang grenade effect lasts 0.1x as long

Upgrade III: Nano Vision energy drain 0.5x