GTA4 is finally divided into two endings, one is a trading branch, including If the price is right and Mr. Mrs. Black's Wedding. Mrs. Beric) "The Tragedy of an Avenger"; ; The other is a branch of revenge, including "cold cuts" and "Mr. Mrs. Black's wedding". Mrs Bellic) "Stop using"; The biggest difference between the transaction part and the revenge part is that in the transaction, Nick shot Dimitri at the end, while the mafia godfather Jimmy was killed by Dimitri, Roman was killed by mistake at the wedding, and his girlfriend Kate broke up with Nick because of Nick's choice. In order to get revenge, Nick finally shot Jimmy, the godfather of mafia. Dimitri was shot by Nick on a Russian cargo ship at the beginning of the mission. At the wedding, his girlfriend Kate was killed by mistake. Kate and Nick joined hands in the wedding because they agreed with Nick's choice. Apparently, they have become a couple with Nick. In addition, I suggest you play both endings, so as to achieve the best completion. In addition, revenge is more difficult to complete the task (some people are speechless and pretend to understand), because the revenge branch faces a large number of enemies in two battles alone ... All my answers above and my screenshots below are refused to be quoted, so please respect yourself for copying others' answers!