Enrico's keepsake is an article in Resident Evil Recollections. It was uploaded on 12 December 2014.
Unlike the items dropped by other characters, you need Enrico's to be able to continue.
You might have expected another special weapon from the captain of Bravo team, but to be fair he had made it further than anybody else at that point.
If he hadn't been stopped chances are he would have been able to go even further...