I voted for DOOM, since the shooting just felt better than the other half of the list of games I played, BioShock Infinite would be my 2nd, Wolfenstein: New Order my 3rd and Metro LL to be my 4th.
There's just something simple and primal about the new reboot, its so good I picked out and played the mods that convert original Doom I and II with its weapons. The music is the icing on the cake, it is very rare for me to like the entirety of an OST, but every time I heard it, I get so much motivation, it wakes up the Doomslayer in me.
I have enjoyed Borderlands 2 through and through, I even forced my friend to play it in Co-op, but he couldn't burden a second playthrough, due to having not much content after beating all of the DLC's. I think he much enjoyed Dying Light over BD2 because of the game mechanics, I mean dude, which game has parkour and grappling hooks?
Far Cry 3 was one of the first games that I played post-Crysis, and I found it to be enjoyable due to having RPG elements in it, and of course the story was something I haven't seen ever in my life at that point and for me it was so over the top, I just wanted to be in that setting myself.
I would nominate the S.T.A.L.K.E.R series to have some of the worst shooting mechanics ever. In the vanilla state, the bullets half of the time don't go where you shoot, you really have to get the guns in good condition to take full advantage of them. With mods though, it is THE most immersive experience I have had. I played Call of Chernobyl mod in 10 hour sittings. Only something modded Skyrim or Fallout could achieve to keep me that engaged.