There are many cheats for GTA V for maximium performance. Below you will find detail of every cheat available in GTA V for PC. All cheats should be entered during gameplay. Once a cheat is entered during gamepaly, a message appear above the map which indicate that the cheat is activated successfully. Cheats can be deactivated by re-entering that code again.

Enter below cheats while playing the game, do not press pause key. It is important to note that don't save your game with any cheats enabled. There is a big list of cheats of different categories for grand theft San Andreas, pick the type of cheat you need.

Weapons, Health and Money:

Police, Stats & Gangs:

Spawn Objects:

Vehicles

Time and Weather:

Gameplay Cheats:

Cell-Phone Passwords:

Any time during the game, dail these numbers from the Niko's Phone to activate the desired effect.
 Note these cheats can affect your missions and achievements in your games.

Map Locations:

UNLOCKABLES:-Friendship Bonuses:

By becoming friend with the following people you will be benefited in many ways.

How to Earn Lots of Money:

If the vehicle or car you are driving breaks down and the engine not start due to failure, call any number from phone book, and thus your engine will be started and repaired.

Cheat List

Type below cheats from a keyboard during gameplay to get their effect.

Armor

During game play, type in "turtoise" and you will have armor. Version 1.1 = Tortoise

Cheat List

Type any one of these codes below during gameplay to stimulate its effect.

Unlocked All Levels:

Hold [Left Ctrl] + [Left Shift] + [F9] at the menu, then play the game. All levels will now be unlocked.

Mission skip:

Press [Esc] button during game play. Go to "Controls" then press [Prt Scr] button to advance into the next mission.
Alternately, you can also press [Left Ctrl] + [Left Shift] + [F12] during game play to skip mission.

Disable enemies:

Note: This trick involve editing a game file; therefore create a backup of the "ai" folder in the "common" directory. Open the "ai" folder. remove the "default.qvm" and "squaddefault.qvm" files. Copy the "settings.qvm" files and paste it twice. Then rename the copies of "settings.qvm"  to "squaddefault.qvm" and "default.qvm". Now play the game all enemies except for tanks and helicopters will ignore you.

Ignored by enemies:

Note: This trick is also involve in editing a game file; theredore create a backup of the file before applying trick. Use any text editor to edit the "settings.qvm" file in the "common\ai" directory in the game folder. Change the given line "BaseData bool8 DangerTimeout[0..100]" into "BaseData bool8 DangerTimeout[0..001]". You will now be ignored by enemies.

Never die:

Note: This trick is also involve in editing a game file; theredore create a backup of the file before applying trick. Use any text editor to edit the "humanplayer.qvm" file in the "humanplayer" directory in the Game folder. Change all the values that is "max damage scale" heading to "0".

Maximum ammunition capacity:

Note: This trick is also involve in editing a game file; theredore create a backup of the file before applying trick. Use any text editor to edit the "humanplayer.qvm" file in the "humanplayer" directory in the game folder. Find the "DefineHumanPlayerAmmoLimit" header. Change the "AMMO_ID_MAKAROVCLIP, 64" entry to "AMMO_ID_MAKAROVCLIP, 99" and do the same to the ammunition definitions that follows it.

Project I.G.I I'm Going In is released in Europe as simply Project I.G.I which is a tactical, action first-person shooter video game developed by Innerloop Studios and released on 15th December, 2000 by Eidos Interactive Inc. It is a best action, light weight game I have ever seen with its amazing Graphics, its cleanliness and its system requirement is also very low.

1. In this trick enemy will not shoot you but ran away from you like you are a bomb. In order to do this go project IGI installed folder (A place where IGI game is installed) then goto common\ai folder. Backup the folder ai, There will be some files like "civlian.qvm" and ,"guard.qvm" like names of enemy's. Copy the file "civlian.qvm" [ ctrl + c ] and paste it [ ctrl + v ] in that same folder, if will be the copy of that file like "copy of civlian.qvm" then rename enemy's files into some other names after that rename "copy of civlian.qvm" into name of enemy's files like "guard.qvm" etc. then start the game then enemy's will not shout you or kill you ,If they see you than thay will run away like civlian. If in mistake game is corrupted and not able to run. Then replace the "ai" folder with the backup "ai" folder as you have created before. The game will run with default setting without trick.
2. There is a secret gun in last mission which is not found in the whole game except the last mission behind the crates as you kill two guards right and left with spaz 12 and you will have to enter to the crate room from right side and this will let you to that gun which is colt anaconda.
3. When you are in third mission, first try to shoot guards from far-off distance where they can't see you. From outside i.e from mountains hit soldiers ones or twice so that they understands that you are their and they will come outside, then you must run on mountains or to the position where game starts, then they watch over the mountains & turn back to go.Then run & kill them from back which is quite easy from natural way of killing.
4. Invisibility Note: Make backup before changing game files! Goto common/ai Folder on Project IGI Application Folder. Backup ai folder. In the ai folder,delete all "qvm" files except "obsever.qvm" and "settings.qvm". Copy "observer.qvm" and rename them as the original file names that you deleted before.
Example : Copy observer.qvm and paste.Then rename the copy obsever.qvm as "civilian.qvm"one by one. Do it same with other files too.
5. Cheat List Enter these codes during game play after typing ''nada'' at the main menu.

         Easy Mode: easy