It sounds like you're looking for Part 2 of a multi-part RAR archive related to Grand Theft Auto IV multiplayer on a NoSteam (cracked/pirated) version.
Older workarounds used to bypass "Games for Windows Live" (GFWL) which was the original, now-defunct multiplayer service for GTA IV. Split Archives:
: These are common for large games. When you download a multi-part archive, gta iv multiplayer nosteam part2 rar
dsound.dll or xlive.dll: Common "loaders" used to bypass Games for Windows Live and enable mods.
Safety: Be cautious when downloading files from the internet. Some solutions might include malware. It sounds like you're looking for Part 2
Hangman's NOOSE: A cooperative mission often used to grind for the elusive "Wanted" achievement.
. These files are often associated with unofficial "No-Steam" patches designed to bypass digital rights management (DRM) or to enable multiplayer on older versions of the game (such as v1.0.7.0 or v1.0.8.0) after official Rockstar Social Club services were retired for the original release. Key Components for "Proper Content" When you download a multi-part archive, dsound
These archives are common vectors for Trojans, miners, and keyloggers. Broken Files: