Very solid, quite enjoyed my playthrough. I do concur with others that I really missed the strafe/crabwalk/pull that the original had. It is such a unique feature of the series, that its lack was really felt. Took about 1½ hours, level 10, all monster lairs defeated. (I have a lot of experience with the original+rando)
I also ran the Linux version and it ran out of the box without any problems. Had no crash or any other issues.