Devwill is available here: https://amaweks.itch.io/devwill

It is also available on Steam, though personally I think using a standalone version works better for speedruns, as the game's engine interacts a little weirdly with both the itch and Steam clients with regards to closing the game.

Please buy Devwill if you wish to run it - it is a cheap game, and though I understand that not everyone is equipped with adequate finances, it's only fair to the developer. This is part of why runs on the training version are not allowed (aside from the obvious potential for abuse of the changes). Thank you.