OKAY SOME SPOIL IT FOR ME RIGHT NOW OKAY, BREAK IT DOWN
Walt got Grey Matter to basically embezzle his money and give it to Walt Jr.
He builds an automatic turret with the M60 he buys and puts it in the trunk of his car.
He kills Lydia with the Ricin.
He gives Skylar the coordinates to Hank and Gomies body, in order for her to make a deal with the DEA.
He goes to the Nazis with the promise that he can teach Todd how to cook with no methylamine. Walt hits the auto turret, all of the Nazis die except for Todd and Jack. Walt dives on Jesse to protect him, and in the process gets shot.
Walt shoots Jack, Jesse strangles Todd.
Walt gives Jesse a gun and tells him to kill him. Jesse drops the gun and leaves, drives out of the compound.
Walt walks into the lab, and dies.
Walt basically absolved Jesse of any Cop trouble by going to the Nazis because the cops will think Walt was cooking not Jesse.