RE2 remake Leon Sewers walkthrough: Save Ada, solve the puzzle - Polygon
Resident Evil 2 Remake: Leon B Scenario - Plug Puzzle Solution - YouTube
RE2 - All Safe, Locker, Desk Codes & Statue Puzzle 2nd Run, Chess Plug Puzzle, Laboratory Codes, Chemical Fill Order for 1st & 2nd Runs EDITED LINK : r/residentevil