Depending on which retailer you bought the game from, you got a different skin.
Unlocking a skin is only half the battle. You cannot change skins during a mission. how to unlock all skins in prototype 2
: Complete all races, rampages, and combat challenges across the different sets (Aerial Assault through Armageddon). Depending on which retailer you bought the game
: A zombified version of Alex Mercer that replaces his dialogue with growls. Prototype Wiki 3. PC-Specific Unlocks & Workarounds Since the PC version of Prototype 2 : Complete all races, rampages, and combat challenges
Then there were the five who stood above the rest. These were the rarest skins, the ones that required a special kind of loyalty. Heller accessed the Radnet Access fully. To truly unlock the following five skins, he didn't just need a code; he needed to be an 'Insider'. He had to register his credentials and prove his dedication: