Resident Evil 4 Codex Exclusive |work| [ 99% LIMITED ]

Capcom also released paid DLC "Exclusive Upgrade Tickets". These allow players to unlock a weapon’s Exclusive Upgrade

If you are looking for a "Codex" specifically, it is important to distinguish it from RE4: What Makes Resident Evil 4 Work // Codex Entry

In the context of Resident Evil 4 Remake , "Codex" likely refers to the Exclusive Upgrade Tickets