If there is so many trolls around Metacritic... why games like Bloodborne keep that high user score? Shouldn´t be Microsoft and Nintendo trolls downgrading it? And why Nintendo games have all high user scores too? Are trolls selective?

Because people like to shit on Destiny, also bloodborne did get trolled up the ass but metacritic removed them.

Yes, very.  Trolls generally like to attack the "hot" thing.  Nintendo rarely falls into that category these days, though there are moments.  Also, as Arch mentioned, metacritic will remove trolling from time to time.

can someone tell me wtf this game actually is?

is it an expansion that I install ontop of the original destiny games? is it the original game with expansions in it?

therefore wtf do i need the original game for and why shoudl I pay full retail for this lol?

So, since many reviewers seem to think this is the game they should have released from the beginning: Why not give us early buyers the expansion for free? :)

Im lost too!

If I understand correctly (correct me if I don't), it's an expansion, and you need the original game and other expansions to play it. You have a special edition with all the games and expansions for 60€ (Amazon). And it's something like 40€ if you have all the previous game and expansions. 

So, it works exactly like other online games with expansions. Nothing to cry about on Metacritic. 

Meta removes the trolls scores after some time... just wait.

Every Sony game had tons os 0 trolls user reviwers that got removed after some days.

in Aus we have Destiny: The Taken King Legendary Edition

It is poorly written but I think you get the Game + Expansion 1 and 2 + The taken king

Now to me that i insane if the original game is included, makes my orginal disc moot and kind of pissed of that I bought it if they were going to pull a stunt like this.