If you've gathered all three Coalescence of the Knife but the portal in Hull Breach still says you're "not worthy," there are a few additional steps you might need to complete: Complete Other Portals: Ensure you've accessed the portals in the Trenchway and the Mausoleum. These require collecting Coalescence of Sorrow and Coalescence of Deep Sky, respectively. After collecting these, go through the portals and open the chests inside. This process seems to be necessary before the Hull Breach portal becomes accessible. Check Your Path: Make sure you're on the correct path at the Shaping Slab. Some players have found that being on the "Path of Ambition" is required for the portal to open. Complete Additional Secrets: There might be other secrets or objectives in The Nether that need to be completed. Double-check for any missed activities or puzzles that could be prerequisites. If you've done all of the above and the portal still doesn't open, consider joining another player's instance where the portal is already active. Some players have reported success by doing this. Remember, the game's mechanics can sometimes be a bit opaque, so it's always good to double-check all possible requirements.