The Duke Skip allows the player to skip the entire prison area of The Duke's Archives, including the otherwise required death on the first encounter with Seath the Scaleless. It was found by Aihel in 2011 on PTDE version of the game.
External resources
Glitchless Method
The skip is executed on the last elevator before the first Seath the Scaleless encounter. After pulling the lever of this elevator you walk, sprint or roll off it before it starts moving downwards, then roll or fall onto the right corner railing of the elevator while it's moving, giving you the opportunity to roll onto the 3rd floor of the Duke's Archives.
- Duke Skip with Bow https://youtu.be/Zs7m-cXytK0 by QueueKyoo on YouTube.
- Duke skip without Bow https://youtu.be/nrVrBWPllTg by Catalystz on YouTube.
- Duke skip alternative with a Bow https://youtu.be/lChnXjTAK14 by San on YouTube.
Glitched Method
The glitched method use the elevator upwarp glitch to get out of bounce.
- Duke skip with memeroll / FC Quit-Out https://youtu.be/EocCG10TLEs by San on YouTube.
- Duke skip example in a run https://youtu.be/BLm2a6vfCLg?t=1684 by M3dic on YouTube.