"Wrong warp" at 45:46, exploit to pick up the M16 early at 44:00.

The dragon pen door is supposed to be locked when Lady Ramkin is not there. However if you load the room first, go back, knock on the door (not the knocker), wait for her to appear and then walk to the exit, the door will be unlocked. Found by Ezekiel: https://www.reddit.com/r/speedrun/comments/apyy2p/ezekiel_accidentally_sequence_broke_discworld/

One might expect this exploit to be useless since the dragon is not yet at the Square, so logically you cannot use the M16 on it, but loading the M16 in fact triggers a global script which causes the next room exit to just launch the final scene. There is another minor exploit here where you can keep picking up firecrackers for loading the M16. In addition to the Firecrackers, you are supposed to need the hot coals from the Dungeon and the Mine, and the custard from the witch's house in the Dark Wood.