I don't know what game everyone else was playing, but it played like Doom 3 when I played it. I just ran around with a shotgun and blew up everyone that rushed me. Used rockets on Mutants.
It's why I don't like Fallout 3's combat. It felt like any generic FPS when I wanted a stats based rpg. I already know going in that I'm probably going to hate the gameplay of NV, so I'm just hoping the quests and characters are awesome and make up for generic FPS shooter in my rpg.