You'll need a copy of the original map of the game. That file is here:
www.piratehearts.com/files/YHtWtG_Campaign.zip

After downloading that, boot the game up. Enter your yolo campaign and hit the tilde button ( ` / ~ ). This brings up console. Then type Edit or Editmode. Alternatively, you can enter the editor by hitting Alt-E.

Hit the Open File button (open folder). It may look empty. In the file you just downloaded, dump the files into the Open File menu. Click the Yhtwtg file and load it. Your default map is now loaded into editor.

Locate the exit screen (the WIN room with the blue curtains), open the console again, and type edit or editmode to leave editor (or hit Alt-E again). Now grab the WIN orb. You're done.

Enjoy your achievement and impress people with your new speedrun.