This has happened about five times now, and I'm stuck in the tutorial level. I'm using steam to play and I need an achievement to get the Spiral Stallet-hat for TF2. I was also looking to check the game and play it for fun, but it's kinda hard when the game freezes on the loading screen to Rescue Camp.

My specs can handle the game, I know that, and after a little bit of research I found out that many others experience this same issue when they're trying to play the game. Does this have something to do with me connecting thru Steam and using my Steam account to play the game?