The DLC for Prototype 2 includes additional characters, upgrades, and game modes. One of the main DLCs is the "Character Pack", which introduces new characters that can be controlled: James Heller and Elizabeth Kress. These characters come with their own storylines and abilities.
: Find your main game directory (e.g., Steam\SteamApps\common\prototype 2 ). Prototype 2 DLC Unlocker-3DM mod
Because these items are already in your game files, "installing" the 3DM mod usually involves replacing or adding a small file to your directory: The DLC for Prototype 2 includes additional characters,