A:AnswerIn game, one part full blade and one part full tape. I'd use them sparingly until you get the upgrade - preferably upgrades, there's two scattered across the game - as the shiv doors they also open have a TON of material inside, at the cost of a full shiv even after the upgrades.
A:AnswerRemastered typically means an major overhaul in graphics i.e high definition to support PS4 console, along with some other tweaks i.e sound, animations etc.