I have a problem on PS4 with the Prototype 2. Is with the trophy that you must upgrade Heller. I tried everything... and I think that is a big bug. Copy is digital... I stay in the first game with all the collectibles, main missions and side missions. Then I finish all the game, load the last point (with Mercer dead) I save.. and I continue in the new game + (difficult). I upload to level 23 an nothing. (Boost in the first game no unlock the trophy..) Someone have the Prototype 2PS4 Platinum for say me what is the problem?