I don't know how bleak it was--it felt like there was a handle on reality, and then there was that whole cop showdown, and then after that it seemed less like bleak realism and more like bleak satire. But I also really need to go back and watch it again.
It's a dark movie with a mentally deranged and dillusional protagonist and a great side cast. It's not the greatest film ever made, and it doesn't take place in space, but if you can put aside those things, you just might enjoy yourself.