Check out my Prototype 2 (HD) Walkthrough !
Let's go out to the city and have ourselves a snack. Our Prototype 2 Walkthrough includes videos for finding collectibles, crushing enemies, and obtaining secrets.
Yellow Zone Blacknet
You can gain even more powers from Blackwatch and Gentek side quests. First shapeshift into an enemy and infiltrate one of their many bases. The terminals inside will lead you to key personal you should consume. Alternately, you can first eat these enemies on the street; they will be clearly marked with memory DNA tags.
Black Tulip is all about hunting down and consuming several Brawlers. This will serve as a great upgrade to the Claw power gained through story mode.
Manticore and Clean Sweep
Manticore will allow you to let loose with your tendril powers. Most of the mission will involve eating waves of Gentek doctors either in the heat of combat or during stealth. Make use of crafty shapeshifting.
Clean Sweep will let you try out your running skills. However, don't worry if you haven't invested any points in Locomotion.