GameSpot writes: "Whether you're killing Army men, mutants, or the Black Watch as you roam the streets, you'll be earning the game's currency in the form of evolution points (EP), which can be spent on upgrading skills in one of three trees. Spending points increases Alex's proficiency in dealing damage, mitigating hurt, and his sensory skills--the last of which will apparently help during certain missions. EP are also rewarded for successfully completing side missions, and though their bountifulness will slow as you progress through the story, you'll never be forced to stack points in a single tree to continue. Radical reps also assured us that there are enough EP to eventually unlock all of Alex's abilities.
Prototype is showing plenty of promise and is sure to appeal to anyone keen on laying waste to a mutant city. Prototype will punch and smash its way onto the Xbox 360, PlayStation 3, and PC in June this year. Check back soon for more GameSpot coverage".