1). All storyline and side quests (for gold) completed
2). All club tasks completed
3). All drug wars completed
4). All unique parachute jumps completed
5). All the seagulls are killed
6). All bonuses of friends are open
7). Account 999999999 $
8). All bonuses and apartments received

To install:

Copy to C:\Documents and Settings\*user name*\Local Settings\Application Data\Rockstar Games\GTA IV (Windows XP) or С:\Users\*user name*\AppData\Local\Rockstar Games\GTA IV\savegames (Windows Vista/7/8/10).

Author: Iluminatich