Will a person who doesn't really enjoy first person shooters other than Doom and Quake enjoy this? I did enjoy Deus Ex: Human Revolution and Far Cry 3, but i liked them more because of stealth, visuals, exploration and RPG mechanics. I tried to avoid shooting for the most part.
However I do enjoy 3rd person shooters like Max Payne 3 and Alan Wake immensely.
Doom & Quake and Deus & FC3 are strange bedfellows. I also don't like FPS much, particularly the recent ones, where you shoot less and do other things more. That said this game can be played as an outright shooter, enemy AI is pretty dumb unless you are playing at highest difficulty. You can simply bulldoze your way through the enemies.
Coming to your query, this game neither has any stealth part nor much RPG mechanics. Visuals are nice, if you don't mind the over-the-top bloom and low-res textures up close. You do get a fairly large amount of area to explore though.