Arcanum: Of Steamworks and Magick Obscura 1.0.7.4 Glitches and Skips
(Note: The speedrun does NOT utilize the Unofficial Arcanum Patch or High Res Patch)
Dialogue Skip:
This skip is utilized to bypass the initial dialogue with Virgil and the final dialogue with Kerghan. When the dialogue begins, typically you can only interact with the conversation tree.
However, if you press 'A', or the 'Last Action Taken' key, you will be given control of your character again. You can then right-click to clear that action icon and do what you need to do.
Note, however, that this does not work on the Molochean Hand assassins; you will instantly be put back into conversation with them as soon as you're out of it.
Train Waypoint Glitch:
This exploit allows you to travel to areas of the game via the train system that are typically inaccessible without having played through to that point of the story first. See video:
Shrouded Hills Bridge Glitch:
This skip allows you to bypass the confrontation with the thugs at the Shrouded Hills bridge. Also known as the pickpocket glitch. See video:
'Body of' Glitch:
This glitch(?) is utilized to finish the final battle with Kerghan without using the Vendigroth Device or Kryggird's Falchion. Kerghan will start the fight in his dragon form, and once his life bar has been depleted he will revert to human form. He will, however, be cloaked in an invulnerability shield that also regens his health. In order to bypass this shield and finish the fight, you need to cast a 'Body of X' spell on him once the animation of him changing to human form finishes.
The speedrun uses Body of Fire since the player will already be at Level 3 of the Fire school. Make sure you have enough mana left to case it. Once you cast it on him, if it is successful he should change into a Fire Elemental.
This breaks his magic shield and allows the player to finish him off.