GTA IV

[Jord]

How much % is the story mode?

[Reptar]

I believe the story mode gives you like around 70% completions. I'm not 100% sure, might wanna look on GameWinners to be exact

[Neil]

Story gives 63%, well I'm 99% sure it does xD
That's what I had when I beat the game anyway

[Mattch]

This should help

Source: http://www.cheatcc.com/xbox360/grandtheftauto4cheatscodes.html

The following is a list of how to get a 100% completion:

Successfully complete all 90 story and procedural missions to get 68% complete.

Successfully complete all 30 car thefts to get an additional 2%.

Successfully complete all 50 stunt jumps to get an additional 2.5%.

Collect all 200 pigeons (flying rats) to get an additional 2.5%.

Find all random characters and complete their missions to get an additional 5%.

Successfully complete all 20 vigilante crimes to get an additional 2.5%.

Kill all 30 people on the list to get an additional 2.5%.

Beat friends or computers at every activity to get an additional 5%.

Get all your friend's special abilities and do all their activities to get an additional 10%. Note: This does not include Dwayne or Roman.

[Wootzeh]

I got completed story on 62.5%

[Neil]

Successfully complete all 90 story and procedural missions to get 68% complete.

That and something else, or several things are wrong, the main story only gives about 63% for all 92 missions

I completed the game and had exactly 63%, I did do 1 random person mission and 1 race though

[Jordy]

This should help

Source: http://www.cheatcc.com/xbox360/grandtheftauto4cheatscodes.html

The following is a list of how to get a 100% completion:

Successfully complete all 90 story and procedural missions to get 68% complete.

Successfully complete all 30 car thefts to get an additional 2%.

Successfully complete all 50 stunt jumps to get an additional 2.5%.

Collect all 200 pigeons (flying rats) to get an additional 2.5%.

Find all random characters and complete their missions to get an additional 5%.

Successfully complete all 20 vigilante crimes to get an additional 2.5%.

Kill all 30 people on the list to get an additional 2.5%.

Beat friends or computers at every activity to get an additional 5%.

Get all your friend's special abilities and do all their activities to get an additional 10%. Note: This does not include Dwayne or Roman.That's almost correct, not quite.

Complete the Main Story and Procedural missions (90 in total) - 68%
Deliver all 30 vehicles to the garage - 2%
Open all unique abilities (Except Roman & Dwayne) - 10%
Beat computer or friends at all activities once - 5%
Find all random characters and complete their encounter missions (except Jeff, Cherise, Clarence and Ivan) - 5%
Kill all 30 pedestrians on the police computer - 2.5%
Solve 20 crimes in Vigilante mission - 2.5%
Find all 200 pigeons (secret packages AKA Flying rats) - 2.5%
Complete all 50 unique jumps - 2.5%

[Neil]

That's almost correct, not quite.

Complete the Main Story and Procedural missions (90 in total) - 68%
Deliver all 30 vehicles to the garage - 2%
Open all unique abilities (Except Roman & Dwayne) - 10%
Beat computer or friends at all activities once - 5%
Find all random characters and complete their encounter missions (except Jeff, Cherise, Clarence and Ivan) - 5%
Kill all 30 pedestrians on the police computer - 2.5%
Solve 20 crimes in Vigilante mission - 2.5%
Find all 200 pigeons (secret packages AKA Flying rats) - 2.5%
Complete all 50 unique jumps - 2.5%

Even that's wrong, the story doesn't give 68%

[Mattch]

Ah well, atleast u get an idea of what u get