It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I've been thinking about buying this game and read about the steam version having an update which made the Meat Circus level easier with additional checkpoint(s) and also some situations not resulting in a death. Does anyone know if GoG also has this fix?

I played the demo of this game some time ago, its got mostly good reviews and its on special. However from what I've gathered about the the last level is that in an earlier version of the game it was a brutal/frustrating level.