The game will return to sale in the form of Complete Edition on March 19, and so far it has 55 official achievements (among them there are no longer online ones).
Achievements will earn only after the upcoming upgrade to the full version.
The full list can be found on the GTA IV page on Steam.
Earlier it became known that Rockstar found a way to return the game to Steam, but along with GWFL, multiplayer will also disappear from it. But the bulk will be combined with Episodes from Liberty City, and the conservation will not disappear.