last light has a slightly faster pace than metro 2033, and has much more outside segments. The human vs human combat is also much better in last light than it was in 2033. I bought it for full price, whatever that was and I loved it. Pretty much since you liked 2033 at least a little bit, then youd like last light a little bit more. Also the graphics are worth playing it alone.
Yeah lame. Also no hud at all... even the almost necessary stuff like for the couple QTE parts and grenade/ammo selection.
That said the whole game was a masterpiece in atmospheric shooters. Aside from STALKER, I can't think of anything even remotely close to the metro games. They are linear immersive shooters with fantastic realization of what it might be like to survive in a metro after nuclear devastation. It's especially wow worthy if you have a machine capable of very high settings.