I have a i3-2350M with HD 3000. It doesn't run well. It becomes somewhat playable when I disable MSAA with the console command "msaa 0", but then you have to run the comand whenever a new map loads.
I'm putting the game aside for now until the console commands become persistent over map loadings, but even without MSAA the performance will be unacceptable for many people, I'm afraid.