The whole game feels watered down to me, like its trying to be something but doesnt quite fulfil it. The game world lacks detail, there is very little physics based objects that react to explosions, hardly any of the environment is destrutable and looking up close at some of the textures, wow its 'mega texture RAGE' all over again.
The game audio just lacks oomph, the shotgun is nothing like the old classic Doom version, all the sounds seem muffled and mellow not sharp and loud with lots of flare. Sounds that should go BANG just go poof instead.