He did not regain his memory, but he revealed his own genetic code and now has unique abilities even for the Prototype.
Alex is firmly established not only in the new city, but also in the body. Will release tentacles, blow everything around! He is full of principles and hope for revenge on the character from the first part, but everything is not so simple. He will not change his shoes into another person, so that he will not be noticed, he will do it, and then he will go crazy again due to travel between worlds. The protagonist of the second part will not sit idly by when shown to the enemy. All the people in the city were infected with the same thing that Alex did, and he likened them to himself, subjugated them and decided to use them to firmly gain a foothold in a new city with new opportunities. Their difference is that Alex decided to conquer New York for himself, adding the word 'Zero' to its name. James Heller is the same prototype as Mercer. The plot of the game describes their opposition in more detail, but there are several details Alex Mercer, the protagonist of the previous game, has become our main enemy. Sergeant James Heller lost his wife and child in the first part of the game, who were infected with the virus. Events of the second part of the famous slasher - Prototype - from the third person take us into the same area of life as the first part - New York.