The crash was happening the moment I'd make contact with the door to complete the first level. It wouldn't even show the level clear screen. I opened the game back up earlier today while steam was closed and had no issues. I then opened steam to see if that would cause issues again, and sure enough the game crashed in the same manner once steam was opened.
I'd also like to note that when exiting to the title screen after completing a level the sky texture disappears for some reason. Not a big deal, but thought you may like to know nevertheless.
How should I send the crash reports to you? And do you want just the DMP files in the reports folder?