The Chapter 2 code comes from the paper in your current run. Check the paper, read the number on its back, then enter that number at the keypad. Numbers seen in other runs are examples, not permanent answers.
Check the paper
When you find a paper clue, check its back and write down the number in the order it appears. Use that written sequence at the keypad.
Enter the current number
At the keypad, enter the number you just read. One example uses 3534; another uses 1629. Neither number should be copied into a different run. If the puzzle panel advances after your entry, continue with the next visible objective.
For the full puzzle sequence, return to the Basement walkthrough. To review the chapter goals first, open the Chapter 2 guide.
If the puzzle does not advance
Go back to the paper and check the digit order again. Then enter the number from that paper. Do not switch to an old example just because it is familiar. The important habit is matching the keypad entry to the clue in the current room.
