Minimum specs it is!
Metro 2033 looked impressive on PC years ago, and if you've been keeping up with its sequel, you'll know that it is similarly going to require a powerful system to achieve those coveted maxed-out settings at a decent resolution and frame rate. A blog post by NVIDIA gives it to us straight:
For what it's worth, select GeForce GTX cards will include a complimentary copy of Last Light. Sounds like 4A Games' latest will put them to good use. Like the last game, I'll probably end up playing this long after launch once these requirements aren't quite so high-end.